Industrial and trades terminology · MLC-0113

Industrial and trades terms: S (898)

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• SThe standard international unit of time, defined by the International System of Units (SI) as the duration of...
• Sabbath of the landA traditional agricultural practice where farmland is left fallow for a period, typically a year, to allow...
• Sable ironA superior quality of Russia iron, the iron produced in Russia and widely exported during the 19th century...
• Sacrificial anodeA highly active metal, such as zinc, magnesium, or aluminum, that is electrically connected to a more noble...
• SaddleA shaped piece of wood, often curved or contoured, used to join two components or to provide support and...
• SAESociety of Automotive Engineers: A global association of engineers and technical experts in the aerospace...
• Safe modeA protective operating state that a spacecraft enters automatically after detecting a serious fault, in which...
• SafetyThe condition of being protected from or unlikely to cause danger, risk, or injury in an industrial or trades...
• Safety chainA secondary coupling device, consisting of heavy-duty chains, used between railway vehicles as a backup to...
• Safety pinA type of pin featuring a simple clasp or guard that covers the sharp point, preventing accidental pricking...
• SailA large piece of fabric or other material set on a mast or stay to catch the wind and propel a vessel. Sails...
• Sailor collarA wide, flat collar that extends over the shoulders and down the back of a garment, resembling the collars...
• SaintA class of 4-6-0 steam locomotives designed by George Jackson Churchward for the Great Western Railway (GWR)...
• SalamanderA large, solidified mass of metal and slag that accumulates at the bottom of a blast furnace hearth. This...
• Salient poleA type of pole construction in rotating electrical machines where the pole pieces project outwards from the...
• SaloonA type of railway carriage or compartment designed with a large, open seating area rather than individual...
• SaltA crystalline mineral composed primarily of sodium chloride (NaCl), which forms extensive sedimentary...
• Salt of tinA chemical compound derived from tin, specifically stannous chloride (tin(II) chloride), used as a mordant in...
• SalvableDescribing timber or other forest products that retain economic value despite having been damaged by fire...
• SAMSurface-to-air missile, a guided missile designed to be launched from the ground or a ship to intercept and...
• Sand batteryA thermal energy storage system that uses sand or a similar granular material as a medium to store heat...
• Sand jackA temporary support device used in construction to lower heavy loads or formwork in a controlled manner. It...
• SandboxA container on a locomotive that holds sand, which can be dropped onto the rails in front of the driving...
• SanderA device on a locomotive that dispenses sand onto the running rails directly in front of the driving wheels...
• Sanding gearA system on railway locomotives and trams that applies sand or a similar abrasive material to the railhead in...
• Sandwich beamA structural beam composed of three or more layers of different materials bonded together, where a core...
• Sandwich shellA structural element characterized by a thin, curved outer layer (shell) enclosing a core material, forming a...
• Sandwich theoryA structural mechanics theory used to analyze the behavior of sandwich structures, which consist of a...
• SandyThe call sign for a combat search and rescue (CSAR) aircraft, typically an A-1 Skyraider or similar...
• SAPSAn abbreviation for Stand-Alone Power System, an off-grid electrical system designed to provide power to a...
• SAPVSA stand-alone photovoltaic system, an off-grid electrical power system that uses solar panels to generate...
• SARSodium Adsorption Ratio, a measure used to assess the suitability of irrigation water or soil for...
• SASAn abbreviation for Stability Augmentation System, an automatic flight control component that improves an...
• SashA long band or ribbon of cloth worn around the waist or over the shoulder as a decorative accessory or part...
• SATAA computer bus interface that facilitates high-speed data transfer between a host system and storage devices...
• Satin jeanA stout, heavy cotton cloth in a hard, fine twill weave, finished to a smooth, glossy face. The twill lines...
• SaturateTo reach a maximum level of intensity or color in an optical sensor or display, beyond which further...
• SaturationThe state in an electronic circuit where an active device, such as a transistor, is driven into a condition...
• SBHThe height of the energy barrier that electrons must cross at a metal-semiconductor junction, found from the...
• SBPSAn abbreviation for Standby Power System, an electrical system that provides backup power to a facility...
• SCAA Shuttle Carrier Aircraft: one of two modified Boeing 747 airliners that NASA used to ferry Space Shuttle...
• ScabbyDescribing a printed surface that exhibits an uneven or mottled appearance, often due to insufficient ink...
• SCADAA system for remote monitoring and control of industrial processes, combining hardware and software to gather...
• Scaff tagA tag hung at the access point of a scaffold to record its inspection status, normally showing the inspection...
• ScaffoldA build-up of partly fused burden, slag and metal on the inner wall of a blast furnace, which narrows the...
• ScalableDescribing a system, process, or product that can handle an increasing amount of work or demand without a...
• ScalarA quantity that has magnitude but no direction, contrasting with a vector which possesses both magnitude and...
• ScaleA thin layer of oxidized material that forms on the surface of metals, particularly iron and steel, when...
• Scan lineA single horizontal row of pixels or picture elements that make up an image on a display screen or in a video...
• ScantDescribing timber or lumber that is undersized or of insufficient dimensions for its intended structural...
• ScarifyTo abrade, scratch, or chemically treat the hard outer coat of seeds to break dormancy and promote...
• Scary sharpA method for sharpening woodworking tools, such as chisels and plane irons, using abrasive films or sandpaper...
• SchlichA heavy mineral concentrate obtained from the washing of crushed ore or alluvial sediments. This material is...
• Schmitt triggerA comparator circuit with hysteresis, meaning it has different threshold voltages for rising and falling...
• School busAn informal unit of length taken from a typical full-size school bus, roughly 9 to 12 metres or 30 to 40 feet...
• SchoolmarmA tree with a forked trunk, where two or more main stems originate from a single base, resembling a person...
• SchwalbeA historical German jet fighter aircraft, specifically the Messerschmitt Me 262, which was the world's first...
• ScissorsA hinged two-arm linkage on a helicopter rotor head that joins the rotating swashplate ring to the rotor...
• Scissors crossoverA track arrangement of two crossovers laid in an X shape between a pair of parallel tracks, so trains can...
• ScoopA functional or decorative opening on the hood or side of a vehicle designed to direct airflow. A functional...
• Scoop driverAn operator of a scoop tram or load-haul-dump (LHD) machine, which is a specialized piece of heavy equipment...
• ScooperA specialized aircraft, such as a Bombardier CL-415, designed to scoop water directly from lakes, rivers, or...
• ScoriaA highly vesicular, dark-colored volcanic rock formed from basaltic or andesitic lava, characterized by its...
• ScourgeAn agricultural hand tool, also known as a flail, used for threshing grain to separate kernels from their...
• SCRA Silicon Controlled Rectifier, a four-layer solid-state current-controlling device that acts as a...
• ScramTo go back over a mine that seems to be worked out and look for ore that can still be taken, going through...
• ScramjetSupersonic Combustion Ramjet, a type of jet engine that operates by compressing incoming air through its...
• ScreedA thin, top layer of material, typically a sand and cement mixture, laid over a concrete subfloor to create a...
• ScreedingThe process of leveling and smoothing a freshly poured concrete or mortar surface to a specified height and...
• ScreenA mesh fabric, typically made of silk, polyester, or stainless steel, stretched tautly over a frame, used in...
• Screen maskA stencil-like device used in screen printing to transfer an image or pattern onto a substrate. It consists...
• Screen printA printing technique where ink is forced through a mesh screen onto a substrate, except in areas blocked by a...
• Screen wallA non-load-bearing wall designed to provide privacy, shade, or aesthetic separation without completely...
• ScreenerA machine equipped with perforated surfaces or wire mesh used to classify crushed rock, ore, coal, or...
• ScreenlessDescribing a printing technique that achieves halftone effects without the use of a conventional halftone...
• Screen-printedDescribing an item or material that has had an image or design applied to it using the screen printing...
• Screw boxA specialized tool used in woodworking to cut external threads onto a wooden dowel or rod. It consists of a...
• Screw theoryA mathematical framework for analyzing rigid body motion and forces in three-dimensional space, representing...
• ScribeTo mark a workpiece by transferring the contour of an adjacent surface onto it, allowing for a precise fit...
• Scribing blockA precision measuring tool used in metalworking to mark lines at a specific height parallel to a surface...
• ScrivetA type of plastic fastener that combines the features of a screw and a rivet, used to attach trim panels...
• ScrollA type of positive displacement pump or compressor that uses two interleaved spiral-shaped scrolls to...
• ScrubberA draggable slider or playhead on the timeline of audio and video software, which lets a user move quickly...
• SCSIA set of standards defining protocols, commands, and interfaces for communication between computers and...
• ScuffleTo cultivate the surface of the soil with a scuffle hoe, a tool designed to cut weeds just below the ground...
• ScummingA printing defect in lithography where non-image areas of the printing plate begin to accept ink, resulting...
• ScuttleAn opening in a ceiling or roof, typically covered by a removable lid or hatch, providing access to an attic...
• SDHC cardSecure Digital High Capacity card, a type of flash memory card that adheres to the SD 2.0 specification...
• SDPSession Description Protocol, a format for describing multimedia sessions for the purposes of session...
• SDRSoftware-Defined Radio, a radio communication system where components that were traditionally implemented in...
• SDSLSymmetric Digital Subscriber Line, a type of Digital Subscriber Line (DSL) technology that provides equal...
• SDVA vehicle whose features and functions are primarily enabled and controlled through software, allowing for...
• Sea linkA scheduled shipping route linking two or more ports, for example a ferry or roll-on roll-off service across...
• SealantA viscous material applied to joints, gaps, or openings in construction to prevent the passage of fluids...
• Sealant backingA compressible material inserted into a joint before applying sealant, serving to control the depth of the...
• SeamThe line formed by joining two or more pieces of material along their edges. In construction, this applies to...
• Seam allowanceThe area between the raw edge of fabric and the stitching line in sewn items. This margin provides material...
• Sears-Haack bodyThe theoretical shape of a body that has the lowest possible wave drag for a given length and volume when...
• SEATAn abbreviation for Single Engine Air Tanker, a type of aircraft used in wildland firefighting to drop fire...
• Seat beltA safety restraint system designed to secure a vehicle occupant to their seat, preventing them from being...
• Seat earthThe layer of clay, shale, or other sedimentary rock that lies immediately beneath a coal seam or other...
• Seat lockThe latch or lock on a reversible seat in a railroad car, which holds the seat back in position facing either...
• Seat onlyA travel booking option that includes only the transportation component, such as an airline flight or a train...
• SeatearthA layer of fossilized soil or clay, also known as underclay, found directly beneath a coal seam. This...
• SeatedDescribing a component that is correctly and securely positioned in its intended place within an assembly...
• SeatingThe process by which two mating surfaces in a mechanical assembly achieve a proper fit and seal, often...
• Seat-mileA unit of measurement in the airline industry representing one aircraft seat flown for one mile. This metric...
• SECOAn abbreviation for Sustainer Engine Cutoff, the event during a rocket's ascent when its main, long-duration...
• Second Law of RoboticsA principle stating that a robot must obey orders given to it by human beings, except where such orders would...
• Second sourceAn alternative supplier for a component, material, or service that is interchangeable with the one from the...
• SecondaryReferring to a process, material, or component that is subordinate or subsequent to a primary one, often...
• Second-growth forestA forest stand that has regrown after a major disturbance, such as logging, fire, or disease, which removed...
• SectionA distinct part or segment of an aircraft structure, such as a wing section, fuselage section, or tail...
• Section beamA large, flanged cylinder used in sectional warping to wind yarn segments before they are combined onto a...
• SectorA single flight leg in an airline schedule, running from preparing and loading the aircraft at one airport...
• Security distanceThe minimum safe following distance a driver should maintain behind the vehicle in front, allowing sufficient...
• SEDSurface-conduction Electron-emitter Display, a flat-panel display technology that uses electron emitters to...
• SeedA mature ovule containing an embryo and stored food reserves, enclosed within a protective seed coat, capable...
• Seed cornCorn kernels specifically grown and harvested for planting in the next growing season, rather than for...
• Seed stitchA knitting pattern characterized by alternating knit and purl stitches within the same row and between rows...
• Seed treeA mature, healthy tree intentionally left standing in a harvested area to provide seeds for natural...
• SeederAn agricultural implement designed to plant seeds into the soil at a controlled depth and spacing. It...
• Seeding ploughAn agricultural implement designed to create furrows and simultaneously deposit seeds into the soil at a...
• Seek timeThe time required for a read/write head in a disk drive to move to the track containing the desired data...
• SeersuckerA lightweight cotton fabric woven with alternating smooth and puckered stripes, giving it a crinkled texture...
• SegmentA distinct portion or section of a journey, route, or transportation network. This can refer to a specific...
• Segment descriptorA data structure in computer architecture, particularly in x86 protected mode, that defines the...
• SeizeTo bind two ropes or parts of a rope together with a smaller line, known as seizing wire or twine, to prevent...
• SelendangA long, narrow piece of fabric, traditionally used in Southeast Asian textile arts, that can serve multiple...
• Self-buildA construction project where the individual or family commissioning the building takes on a direct role in...
• Self-centeringDescribing a mechanism or device that automatically aligns a workpiece or tool to a central axis or reference...
• Self-clampA mechanism or device designed to automatically secure an object without external manual intervention once...
• Self-drilling screwA type of screw designed with a drill-like point that allows it to drill its own hole and create its own...
• Self-driveDescribing a vehicle rental agreement where the renter operates the vehicle themselves, rather than having a...
• Self-fabricThe main material used for a garment, also employed for its trimmings, linings, or decorative elements. This...
• Self-finishedDescribing a material or product that requires no additional surface treatment or coating after its primary...
• Self-hardeningDescribing a material, typically steel, that hardens upon cooling in air from an elevated temperature without...
• Selfie cameraA front-facing camera on a mobile device, such as a ruggedized tablet or smartphone used in the field. In an...
• Self-parkingA feature in modern vehicles that assists the driver in maneuvering into a parking space with minimal or no...
• Self-rightThe ability of a body to return to its upright position after being tilted or capsized, through a restoring...
• Self-stripingDescribing yarn that is dyed in a sequence of colors designed to create stripes or other patterns...
• SelvageA thin layer of altered rock or clayey material found along the margins of a mineral vein or orebody...
• Semaphore signalA type of railway signal that conveys instructions to train drivers by the position of a movable arm or...
• SemiA prefix indicating a type of coal with a rank between anthracite and bituminous, specifically...
• Semi-automaticDescribing a type of transmission that allows for manual gear selection by the driver but automates the...
• SemiconvertibleA vehicle with a roof design that allows a portion of the roof, typically the fabric section over the...
• SemisheerDescribing a fabric that is partially transparent, allowing some light to pass through but obscuring direct...
• Semi-trailingDescribing a type of independent suspension system for vehicles where the pivot axis of the control arm is...
• SendAn output on an audio mixing console that routes a copy of a channel's signal to an external device, such as...
• SensitivityThe minimum input signal level required by a device to produce a specified output or to respond reliably...
• Sequential logicA type of digital logic circuit whose output depends not only on the present value of its inputs but also on...
• Sequential manual gearboxA type of transmission where gears must be selected in a specific order, either up or down, rather than...
• Sequential valve timingA variable valve timing technology in which hydraulic pressure rotates the camshaft relative to its drive...
• SERAThe Single European Railway Area, a European Union policy aimed at creating a single market for rail services...
• SerDesA serializer/deserializer, a pair of functional blocks that convert data between serial and parallel...
• SergeA durable twilled fabric with diagonal ridges on both sides, traditionally made from wool but also from...
• SergerA specialized sewing machine that uses multiple threads to create an overcast stitch, simultaneously sewing a...
• SericultureThe cultivation of silkworms, primarily the species Bombyx mori, for the production of raw silk. This...
• Series-woundDescribing an electric motor or generator where the field winding is connected in series with the armature...
• ServiceThe scheduled or unscheduled maintenance, inspection, and repair of agricultural machinery to maintain its...
• Service bookA document provided with a new vehicle that records its maintenance history, including scheduled services...
• SESAn abbreviation for sustainer engine start, the point in a launch sequence at which a vehicle's sustainer...
• SetThe process by which a cementitious material like concrete or mortar hardens and gains strength after being...
• Set fairTo bring a plastered surface to a smooth, flat, finished state after the rough coats are on, by applying and...
• Set offThe undesirable transfer of wet ink from the printed side of one sheet to the back of the next sheet in a...
• Set outTo arrange the type needed for a job in the printing press in readiness for running it, an obsolete printers'...
• Set up to oneselfAn obsolete composing-room expression for a compositor setting up one portion of a text that comes before...
• Set-inDescribing a sleeve that is sewn into a conventional armhole seam, creating a distinct seam line around the...
• SetonA length of thread, tape, or other absorbent material drawn through a surgically created passage beneath the...
• SettA rectangular, dressed paving stone, traditionally made of granite, used for creating durable road surfaces...
• Setup timeThe minimum amount of time that a synchronous input data signal must be stable and present before the active...
• Sexagesimo-quartoA book format, abbreviated as 64mo, resulting from folding a printed sheet six times to produce a gathering...
• SextodecimoA book size produced by folding a full sheet of paper four times, yielding 16 leaves or 32 pages per sheet...
• SFCAn abbreviation that commonly stands for 'Sequential Function Chart,' a graphical programming language used...
• SFGAn abbreviation for Signal Flow Graph, a graphical representation of a set of linear algebraic equations that...
• SGMA scanning probe microscopy technique, Scanning Gate Microscopy (SGM), that images the flow of electrons in a...
• ShackleA U-shaped piece of metal secured by a pin or bolt, used for connecting chains, ropes, or other rigging...
• ShacklerA mine worker whose job involves coupling and uncoupling mine cars or tubs to form a train, which is then...
• Shadow blister effectA visual effect in which the shadow of one object bulges toward the shadow of a second object as the two...
• ShaftA frame in a loom that holds a set of heddles, through which warp yarns are threaded. The shafts move up and...
• Shaft horsepowerThe actual power delivered by an engine or motor to a rotating shaft, measured at the shaft itself. This...
• ShakeThe uncontrolled flapping or vibrating of a sail, particularly at the luff, when it is not properly trimmed...
• ShakenDescribing ground or rock strata that have been disturbed or fractured by seismic activity, blasting, or...
• ShambleOne of a series of shelves, niches, or platforms built one above another in a mine, from each of which ore is...
• ShankThe non-working portion of a tool, such as a drill bit, reamer, or end mill, that is held by a chuck, collet...
• ShaperA machine tool that produces flat surfaces, grooves, or other forms by reciprocating a single-point cutting...
• ShareThe pointed, replaceable part of a plow or other tillage implement that penetrates the soil and initiates the...
• SharebeamThe main structural component of a plow to which the cutting blade, or plowshare, is attached. This sturdy...
• Shark finA roofing defect in which the side lap or end lap of a felt ply curls upward instead of lying flat on the ply...
• ShatterThe natural process where mature seeds detach and fall from the parent plant before harvest, leading to yield...
• Shaving horseA specialized workbench used by woodworkers for holding a workpiece securely while it is shaped with a...
• Shaving toolA cutting tool that takes off a very thin layer of material to improve the finish or size of a surface or...
• Shawl collarA rounded, continuous collar that extends from the back of the neck, down the front edges of a garment...
• ShayA type of geared steam locomotive characterized by its offset boiler and vertical cylinders driving a...
• ShearA material failure or cutting process that occurs when parallel but opposing forces cause one part of an...
• Shear centreA point in the cross-section of a beam or structural member through which a transverse shear force can be...
• Shear-cakeA heavy slab of refractory material, balanced by a counterweight, that serves as the sliding gate or door of...
• ShearingThe process of cutting or breaking away a section of a mineral seam or rock face using a specialized machine...
• SheathAn outer protective covering for electrical cables or wires, providing mechanical protection against...
• ShedA simple, single-story structure, often detached from a main building, used for storage, as a workshop, or to...
• Shed roofA roof design characterized by a single, continuous slope, resembling half of a gable roof. It is one of the...
• SheepsfootA printer's hand tool with a claw at one end, used for prying up a form, that is, for lifting the locked type...
• Sheep-splitA type of leather created by splitting the skin of a sheep into two or more layers. The top layer with the...
• SheetA rope or line used to control the angle of a sail relative to the wind and the vessel's centerline. By...
• Sheet rockA common building material consisting of gypsum plaster pressed between two thick sheets of paper, used for...
• SheetfedDescribing a printing press that feeds individual sheets of paper into the printing unit, as opposed to a...
• SheetwiseA method of printing where one side of a sheet of paper is printed with one form, and then the sheet is...
• Sherman necktieA railroad rail that was heated over a fire of burning ties and then bent or twisted, often around a tree, so...
• SHFThe designation for radio frequencies in the range of 3 to 30 gigahertz (GHz), corresponding to wavelengths...
• ShieldA heavy, movable support structure used in underground mining, particularly in longwall operations, to...
• Shielded twisted pairA type of electrical cable consisting of one or more pairs of insulated conductors twisted together and...
• ShiftA scheduled period of work for a group of employees, particularly in industries that operate continuously or...
• ShifterA mine worker, in bituminous coal mining, who assists the brattice workers, repairmen, and timbermen instead...
• ShimstockThin, flat material supplied in rolls or sheets, specifically manufactured for cutting into shims. It is...
• ShingleA thin, flat piece of material, often rectangular, used as an exterior covering for roofs and walls. Shingles...
• ShipA large watercraft designed for extended voyages on the sea, capable of carrying cargo, passengers, or...
• Ship liftA stationary platform used for lifting vessels out of the water for dry-docking and lowering them back in...
• Shipping companyAn enterprise that owns, operates, or manages vessels for the transportation of cargo or passengers by sea...
• ShipsetA complete collection of all the parts and components needed to assemble a specific system or major...
• ShirrTo gather fabric into parallel rows of tight gathers, creating a decorative and elastic effect. This...
• ShirtA garment worn on the upper body, typically made of woven fabric and featuring a collar, sleeves, and a front...
• ShishaA type of embroidery that involves attaching small pieces of mirror, mica, or reflective metal onto fabric...
• ShoadFragments of ore or mineral-bearing rock found on the surface, often scattered downslope from a hidden vein...
• ShockA sudden, intense impact or force applied to a mechanical system, resulting in a rapid transfer of energy and...
• Shock absorberA mechanical component designed to dampen oscillations and dissipate kinetic energy within a suspension...
• Shock absorptionThe process by which a vehicle's suspension system dissipates kinetic energy from road irregularities...
• ShoegearThe assembly on an electric train or other electrically powered vehicle that makes contact with a third rail...
• ShooflyA temporary length of track laid around a section of railway that is blocked or closed by construction...
• ShootTo plane the edge of a board perfectly square or to a precise angle using a shooting board. This specialized...
• Shooting brakeA car body style that combines elements of a coupe and a station wagon, typically featuring two doors and an...
• Shooting stickA printer's tool, a short bar of wood or metal, that is held against a quoin and struck on its other end with...
• Shop headThe head formed on a rivet when it is driven, made by upsetting the plain end of the shank against a bucking...
• Short blockAn engine assembly consisting of the engine block, crankshaft, connecting rods, and pistons, but without the...
• Short busA type of bus characterized by a shorter wheelbase and body length than a conventional single-decker bus...
• Short circuitAn abnormal connection between two nodes of an electric circuit intended to be at different voltages...
• Short crossThe shorter of the two metal crossbars of a printer's chase, the rectangular frame in which a form of type is...
• ShortwallA method of underground coal mining that uses a continuous miner to extract coal from relatively short...
• ShortwaveRadio waves with wavelengths shorter than those of medium wave radio, typically referring to frequencies...
• Shot sampleA small, rapidly solidified metal sample taken from a molten bath for the purpose of chemical analysis. The...
• ShotfirerA qualified and licensed individual responsible for preparing and detonating explosives in mining, quarrying...
• ShotfiringThe process of detonating explosives to break up rock or other materials in mining, quarrying, or demolition...
• ShoulderThe non-printing area of a metal type character, extending from the base of the character to the edge of the...
• Shoulder beltThe diagonal strap component of a three-point seat belt system that crosses the occupant's chest and...
• Shoulder seasonA period of travel that falls between the peak and off-peak seasons for a particular destination. During this...
• ShowAn indication or visible sign of mineralization or a valuable deposit encountered during exploration or...
• Show-throughThe undesirable visibility of printed text or images from the reverse side of a sheet of paper. This occurs...
• ShuntTo move railway vehicles, such as wagons or carriages, from one track to another within a yard or siding...
• ShunterA small locomotive used for moving railway cars within a rail yard, siding, or industrial facility, also...
• Shunting neckA short, dead-end track connected to a set of sidings in a rail yard, used exclusively for switching...
• ShutterA temporary mold or framework, usually made of wood, steel, or plastic panels, into which wet concrete is...
• ShuttererA skilled tradesperson responsible for constructing and dismantling formwork, also known as shutters, for...
• ShuttleA device used in weaving to carry the weft yarn horizontally through the shed, which is the opening created...
• Shuttle driverA mechanism on a loom responsible for propelling the shuttle across the warp threads to insert the weft yarn...
• ShuttlemanA person employed in a historical textile mill to repair the shuttles of the looms. The shuttle is the...
• SIThe International System of Units, a globally recognized system of measurement based on seven base units for...
• SialicRelating to igneous rocks and magmas rich in silica and alumina, the primary components of feldspar and...
• SickDescribing a plant or animal exhibiting symptoms of disease, injury, or poor health, which can negatively...
• SickleA hand-held agricultural tool with a curved blade and a short handle, primarily used for harvesting grain...
• SideA distinct surface or face of an object, material, or component, often differentiated by its function...
• Side chainA type of coupling chain used on some railway rolling stock, particularly older designs, that connects...
• Side playThe amount of axial or lateral movement present in a component or assembly that is not intended to be fixed...
• Side shotA measurement taken from a surveying instrument to a point that is not part of the main traverse or control...
• Side valveAn engine design where the intake and exhaust valves are located in the engine block adjacent to the...
• SideboardingThe application of boards, panels, or planks to the exterior walls of a structure to provide a protective and...
• SideformA type of formwork used in concrete construction to define the vertical edges of a concrete slab or other...
• SidepipeAn exhaust system component that routes exhaust gases out of the side of a vehicle, rather than the rear...
• SidescreenA removable panel or curtain used on older open-top vehicles, particularly roadsters and convertibles, to...
• SidestickA tapered wooden or metal wedge used in letterpress printing to lock up a forme within a chase, working in...
• SidetrackTo drill a new wellbore from an existing well, deviating from the original path. This technique is employed...
• Sidewalk superintendentAn onlooker who watches a construction site from the street, often offering unsolicited advice or commentary...
• SidewinderA trawler that tows its net from the side, with the trawl warps led through blocks on two gallows, one...
• SignalA function that conveys information about a physical phenomenon, represented as a variation in a quantity...
• Signal aspectThe visual indication displayed by a railway signal, conveying an instruction or information to a train...
• Signal boxA building or cabin housing the levers, switches, and control panels used by a signalman to operate railway...
• Signal bridgeA gantry-like structure that spans multiple railway tracks to support the signals governing train movements...
• Signal checkA hold-up to a train caused by a signal ahead showing a restrictive aspect, so that the driver must slow down...
• Signal gantryA structural framework, typically made of steel, erected over one or more railway tracks to support signals...
• Signal ladA junior employee or apprentice working in a signal box under the supervision of a signalman, a role...
• Signal passed at dangerAn incident where a train proceeds past a railway signal that is displaying a 'stop' aspect, indicating that...
• Signal postA vertical structure that supports a railway signal head, positioning it for clear visibility by train...
• Signal processingThe analysis, interpretation, and manipulation of signals, which can represent physical quantities such as...
• Signal timingThe programmed sequence and duration of traffic light indications at an intersection, designed to manage...
• SignallingThe system of visual indicators, track circuits, and control centers used to direct train movements safely...
• Signalling eventAn occurrence that triggers a specific action or state change within a communication system or electronic...
• SignatureA printed sheet of paper that contains multiple pages of a book or publication, arranged in a specific order...
• Silicon lotteryThe variability in manufacturing quality and performance characteristics among individual semiconductor...
• SillA horizontal member forming the bottom part of a window or door frame, or the lowest timber in a framed...
• SiloA tall, cylindrical, or pit-like structure used for storing bulk materials, most commonly silage or grain, on...
• Silo truckA specialized commercial vehicle equipped with a large, cylindrical tank designed for the bulk transport of...
• SilvaThe forest trees or the entire plant community of a specific region, considered as a collective ecological...
• Silver boxA device from the telephone phreaking era that generates the four extra DTMF tones for the A, B, C and D...
• SilvicsThe study of the life history and general characteristics of forest trees and stands, with particular...
• SilvopastureAn agroforestry practice that deliberately integrates trees, forage plants, and livestock into a single...
• SIMAn integrated circuit card that securely stores the international mobile subscriber identity (IMSI) and...
• SimaticDescribing rock made up chiefly of minerals rich in silica, magnesium, and iron, among them olivine...
• SIMMA type of memory module, a Single In-line Memory Module, containing random-access memory chips mounted on a...
• SimpleA set of vertical cords on a drawloom, each linked through harness cords to a group of warp ends so that...
• Simple harmonic motionA type of periodic motion where the restoring force is directly proportional to the displacement from an...
• SimplexA communication mode where data or signals can only be transmitted in one direction, from a sender to a...
• SingerA restored and modified classic air-cooled Porsche 911, reimagined by the company Singer Vehicle Design...
• Single curveDescribing a surface or panel that is curved in only one direction, meaning it can be unrolled or flattened...
• Single data rateA characteristic of synchronous memory where data is transferred only once per clock cycle, on the rising...
• Single ticketA travel ticket valid for a one-way journey from an origin to a destination, without a return component. This...
• Single-phasingThe condition in a three-phase electrical system where one of the three phases loses power or becomes...
• Single-ply membraneA type of roofing material consisting of a single layer of flexible, synthetic polymer sheets, such as EPDM...
• Single-ply roofA roofing system constructed using a single layer of flexible, synthetic membrane material, such as EPDM...
• SinglingThe process of reducing a double-track railway line to a single track, often for maintenance, construction...
• SinkTo excavate a vertical shaft or incline from the surface downwards into the earth to access underground...
• SinkerA type of framing nail with a conical head and a textured face, designed to be driven flush with or slightly...
• SIPPAn acronym for Standard Interline Passenger Procedure, a set of codes used in the car rental industry to...
• SIRA quantitative measure of electrical resistance, known as Surface Insulation Resistance, used to assess the...
• SIRTFThe Space Infrared Telescope Facility, the original name for what is now known as the Spitzer Space...
• SisterTo reinforce an existing structural member, such as a joist or stud, by attaching an identical or stronger...
• SitA subsidence or collapse of the ground, either at the surface or within underground mine workings. This...
• Sit-up-and-begDescribing a style of bicycle characterized by an upright riding position, where the rider sits with a...
• Six footThe area between the nearest rails of two parallel standard gauge railway lines, whatever its actual width...
• Six-packA carburetor setup on an internal combustion engine that features three two-barrel carburetors, totaling six...
• SizeTo classify crushed or ground ore particles into groups based on their physical dimensions through screening...
• Size-upThe initial and ongoing assessment of an emergency incident by the first arriving unit or incident commander...
• SkateboardA chassis layout for electric vehicles in which the battery pack, drive motors, and suspension sit in a flat...
• SkeinA length of yarn, thread, or silk wound into a loose, elongated loop and twisted or tied so it does not...
• SkewThe phenomenon in synchronous digital circuits where the same clock signal arrives at different components at...
• Skew bevel gearA bevel gear whose straight teeth are set at an angle to the elements of the pitch cone instead of running...
• SkiA landing gear component, typically a long, flat runner, used on aircraft designed to operate from snow or...
• SkidA landing gear configuration on helicopters consisting of two parallel tubes or runners that support the...
• Skid carA training vehicle modified with outriggers or special low-friction tires that can be adjusted to simulate a...
• Skid roadA temporary road or trail constructed in a logging area for the purpose of dragging or skidding felled timber...
• SkiddingThe process of moving felled trees or logs from the stump to a landing or roadside using specialized...
• SkidplateA protective panel mounted to the underside of a vehicle to shield vulnerable components from damage due to...
• SkifflingA rough dressing of quarried stone in which knobs and projections are knocked off the surface of a block to...
• Skim pitAn open pit used in oil production, filled by pumping in a mixture of oil and water and then left alone so...
• SkinThe outer plating or planking that forms the hull of a vessel. This structural layer provides buoyancy and...
• Skinny jeansTrousers made from denim fabric that are cut with a very narrow leg opening and a close fit throughout the...
• SkipA large, open-topped container used for hoisting excavated material, such as ore or waste rock, up a mine...
• SkipmanAn operator responsible for loading and unloading skips, which are large conveyances used to hoist ore, coal...
• Skirt fingerA flexible, segmented extension attached to the lower edge of the skirt on an air-cushion vehicle or...
• Skirting boardA length of timber or a synthetic molding fixed along the base of an interior wall where it meets the floor...
• SkivingA machining process that involves shaving off a thin layer of material from a workpiece using a specialized...
• SkpoA knitting abbreviation meaning "slip, knit, pass slipped stitch over," a method for decreasing stitches that...
• SkyhookA proposed space tether for cheaper launches: a massive satellite trails a long cable down toward the upper...
• Sl stAn abbreviation for 'slip stitch' in crochet, a method of joining stitches or moving the hook across a row...
• SLAAn abbreviation for short long arms, a type of independent suspension design using two unequal-length...
• SlabA flat, horizontal structural element made of concrete, often reinforced with steel, that forms floors...
• Slab lineA type of planar transmission line used for guiding electromagnetic waves at microwave frequencies...
• Slab on gradeA concrete foundation system where a single layer of concrete is poured directly onto a prepared and leveled...
• SlackThe amount of free play or looseness present in the coupling system between railway cars. This allows for a...
• Slack fillThe difference between the actual capacity of a container and the volume of product it holds. This empty...
• SlacklineA type of cableway system used for excavating and transporting material over long distances, often across...
• SlaggabilityThe tendency of ash from fuel combustion or impurities in ores to form slag within a furnace or boiler. It...
• SlaggableDescribing a material or impurity that can be effectively separated from a molten metal by forming a molten...
• SlaggerA worker in a foundry or smelter whose job is to remove slag, the impurities that float on the surface of...
• SlaglessnessA condition in metallurgical processes where the molten metal is free from or contains minimal amounts of...
• SlantA short inclined crosscut linking a coal entry with its air course, which makes hauling the coal easier, or a...
• Slap markA temporary or permanent identification mark applied to the skin of livestock, particularly pigs, using a...
• Slap markerA hand-held tattooing tool for livestock, mostly pigs, whose face carries rows of needle pins set in letters...
• Slash pileAn accumulation of woody debris, such as branches, logs, and stumps, left over from logging operations, land...
• SlatAn aerodynamic control surface mounted on the leading edge of an aircraft's wing that extends at low...
• SLDA simplified schematic drawing that represents a three-phase electrical power system using single lines and...
• SleaveTo separate or untwist threads or fibers from a larger mass, often referring to the process of disentangling...
• Sledge brakeA brake whose wooden or metal block is pressed directly onto the rail head instead of onto the wheel tread...
• Sleep shortsLoose-fitting shorts designed for comfort during sleep or lounging. They are typically made from soft...
• SleeperA horizontal timber laid directly on the ground or a sub-base, serving as a foundation or support for...
• Sleeping carA type of passenger railway car equipped with beds or berths for overnight travel, allowing passengers to...
• Sleeping tableA stationary, slightly inclined platform on which finely crushed ore is washed by a stream of water, so that...
• SleeveA tubular component used to enclose, protect, or insulate electrical connections or conductors. It can...
• SleevedDescribing a pipe, conduit, or cable that is enclosed within a larger, protective pipe or casing. This outer...
• SleevelessDescribing a garment, such as a top, dress, or jacket, that lacks fabric covering the arms. The armholes are...
• SlewTo shift a section of railway track sideways in one piece, correcting its alignment, adjusting a curve or...
• SleyThe number of warp threads per inch in a woven fabric, a key determinant of the fabric's density and texture...
• SlickA tire with a smooth tread surface and no grooves, used in racing on dry pavement to put the maximum rubber...
• SlickerA hand tool used in foundry work for smoothing and finishing the surfaces of sand molds before casting. It...
• SlingA loop or arrangement of rope, wire rope, chain, or webbing used to connect cargo or equipment to a crane...
• SlingloadA method of transporting external cargo beneath a helicopter, suspended by a cable or sling. This technique...
• SlingshotA type of drag racing vehicle characterized by its long wheelbase and the driver's position behind the rear...
• Slingshot effectA gravitational assist maneuver used by spacecraft to gain or lose speed and change direction without...
• SlipThe difference between the synchronous speed of a rotating magnetic field and the actual rotor speed in an...
• Slip coachA railway carriage designed to be detached from a moving train at an intermediate station without the train...
• Slip laneA dedicated lane at an intersection that allows vehicles to turn right (in right-hand traffic countries) or...
• Slip sheetA plain, unprinted sheet of paper or other material inserted between printed sheets as they come off the...
• SlipstitchA hand-sewing stitch that is nearly invisible on the right side of the fabric, used for joining two folded...
• SloamA layer of soft, clayey, or muddy material found between beds of coal or adjacent to a coal seam. This...
• SloopA single-masted sailing vessel where the mast is stepped well forward, carrying a mainsail and a single...
• SloperA basic pattern piece used in garment manufacturing that conforms to the natural curves of the body. It...
• SlopoverA portion of a wildland fire that crosses a control line or natural barrier, such as a road or river, and...
• SlotAn axial groove cut into the laminated stator or rotor core of a rotating electrical machine to hold the...
• SlotterA machine tool that performs a slotting operation, which involves cutting internal or external keyways...
• Slow lightA phenomenon where the group velocity of light is significantly reduced, often to hundreds of meters per...
• Slow speed controlAn electronic control fitted to a locomotive that holds it at a very low, steady speed so that a train can be...
• Slow streetA street design strategy that prioritizes pedestrian and cyclist safety and comfort over vehicular traffic...
• SLSSpace Launch System: A super heavy-lift expendable launch vehicle developed by NASA. It is designed to carry...
• SlugA unit of mass in the Imperial system, defined as the mass that accelerates at one foot per second squared...
• Slug outTo produce printed matter using slugs, the solid lines of type metal cast by a Linotype machine, an obsolete...
• SluiceA channel or trough, often fitted with riffles, used in placer mining to separate heavy minerals like gold...
• SlurAn unintended smearing or dragging of ink on a printed sheet, resulting in a blurred or distorted image or...
• SlurryA thin, semi-liquid mixture of animal excrement, primarily urine and feces, combined with water and sometimes...
• Slush-castA casting method where molten metal is poured into a mold, allowed to solidify partially from the mold walls...
• SLVSatellite Launch Vehicle: A rocket designed specifically for placing artificial satellites into Earth orbit...
• SmAn abbreviation for "square meter," a unit of area in the International System of Units (SI). It represents...
• SmallA standard garment size smaller than medium and larger than extra small, abbreviated S. Each brand sets its...
• Small applianceA portable or semi-portable electrical machine used for household or light commercial tasks. These devices...
• Small leaderA boy employed in a colliery to take small coal, the fine material left after larger lumps were sorted out...
• Small letterA lowercase character in typography, as opposed to an uppercase or capital letter. These characters form the...
• Small picaA historical name for a size of metal type, measuring approximately 11 points in the Anglo-American point...
• Small Scale IntegrationThe earliest level of integrated circuit technology, characterized by having up to 10 logic gates or a few...
• Small textA dated name for a small size of type used in French and Italian printing, generally treated as the same as...
• Smallman clipA specialized safety device used in underground mining to secure mine cars or tubs to a moving haulage rope...
• S.M.A.R.T.A monitoring system included in computer hard disk drives and solid-state drives to detect and report on...
• SMARTA monitoring system included in computer hard disk drives and solid-state drives, known as Self-Monitoring...
• Smart casualA dress code that combines elements of formal and casual wear, resulting in a polished yet comfortable...
• Smart farmingAn approach to farm management that uses modern information and communication technologies to increase the...
• Smart motorwayA section of motorway that uses technology to actively manage traffic flow and reduce congestion. This...
• SmartphoneA mobile telephone built on a mobile operating system with advanced computing capabilities and connectivity...
• SmasherA person employed at a mine, in the days of hand labour, to break up waste rock into smaller pieces. The word...
• SMDAn electronic component designed to be mounted directly onto the surface of a printed circuit board (PCB)...
• SmeltingA pyrometallurgical process that extracts a base metal from its ore by heating it to a high temperature in...
• SMFA type of optical fiber, Single-Mode Fiber, designed to carry light directly down the fiber without internal...
• SMMTThe abbreviation for the Society of Motor Manufacturers and Traders, the primary trade association for the...
• SmockingAn embroidery technique used in textile manufacturing to gather fabric into tight pleats and hold them in...
• Smoke blowerA device used in beekeeping to pacify honeybees before inspecting a hive, also known as a bee smoker. It...
• Smoke deflectorA panel or wing fitted to the sides of a steam locomotive's smokebox, designed to lift the exhaust smoke...
• Smoke explosionAn explosive ignition of accumulated unburned fire gases that have mixed with air within their flammable...
• SMOSThe Soil Moisture and Ocean Salinity satellite, an Earth observation satellite developed by the European...
• Smother cropA fast-growing, dense crop planted to suppress weeds by outcompeting them for light, water, and nutrients...
• SMPSA switched-mode power supply, an electronic power converter that uses a switching regulator to convert...
• SMRA category of advanced nuclear fission reactors that are smaller in size and power output compared to...
• SMSA Safety Management System is a structured approach to managing safety, including the organizational...
• SMTA method for constructing electronic circuits in which the components are mounted directly onto the surface...
• SmutSoft, inferior coal that contains much earthy matter, including the poor, dull, sooty parts of a seam and the...
• SnailA spiral-shaped cam, or a flat plate with a spirally curved outline, that gives motion to or sets the...
• SnakeTo spiral a thin line around a thicker rope, laying it in the grooves between the rope's strands, a treatment...
• SnakeheadA failure mode of early strap-iron rails where a section of the iron strap delaminates from its wooden...
• Snap tinA metal container, typically made of tin, used by miners to carry their food or personal items underground...
• SnapeTo bevel the end of a piece of timber or other material so that it can fit flush against an angled surface...
• Snell's lawA formula describing the change in direction of a wave as it passes from one medium to another. The law...
• Snifting valveA type of automatic air valve, also known as a snifter valve, that allows air to enter or escape a pipeline...
• SnigTo drag logs or felled trees along the ground, typically using a tractor, skidder, or animal power, from the...
• SnowA type of two-masted sailing vessel, similar to a brig, but with a small trysail mast abaft the mainmast...
• Snow guardA device installed on a roof to retain snow and ice, preventing it from sliding off in large masses. These...
• Snow loadThe weight of accumulated snow and ice on a roof or other horizontal surface, which exerts a downward force...
• Snow shedA protective structure built over a section of railway track to shield it from heavy snowfall, avalanches...
• Snow tireA specialized tire designed to provide enhanced traction and grip in cold weather conditions, including snow...
• Snowflake wheelA type of automotive wheel rim characterized by a multi-spoke design that radiates from the hub, resembling...
• SnowmachineA self-propelled vehicle designed for travel on snow, steered by skis at the front and propelled by a...
• SnowmobileA motorized vehicle designed for travel over snow and ice, propelled by one or more drive tracks and steered...
• SnozzleA cone-shaped piercing nozzle at the end of an extendable boom, trademarked Snozzle, mounted on aircraft...
• SOAThe voltage and current conditions over which a semiconductor device, such as a transistor or thyristor, can...
• SoakTo hold a ceramic kiln at a specific high temperature for an extended period during the firing cycle. This...
• SoamA short rope used in coal mines to pull a tram, the small wagon that carries coal along the underground...
• Soap offA hot wash applied after dyeing or printing, using soap or a synthetic detergent, to strip unfixed and...
• SOBThe number of people aboard an aircraft, crew and passengers together, expressed as souls on board...
• SOCAn integrated circuit that integrates all or most components of a computer or other electronic system into a...
• SockA flexible, tubular covering designed to protect or contain an object. In industrial contexts, this can refer...
• SocketA female connector designed to receive a male counterpart, such as a plug or a component lead, to complete an...
• Sodbuster ploughA heavy-duty moldboard plow designed for breaking up tough, virgin prairie sod with dense root systems. Its...
• SODIMMA type of computer memory module that is physically smaller than standard DIMM modules, designed for systems...
• Sodium adsorption ratioA measure used to assess the suitability of water for irrigation and the potential for sodium to accumulate...
• SoffiettaA glassmaker's tool consisting of a metal tube, often swan-necked, ending in a conical nozzle. The nozzle is...
• SOFIAThe Stratospheric Observatory for Infrared Astronomy, a modified Boeing 747SP aircraft carrying a 2.7-meter...
• Soft errorA transient data corruption in a digital circuit or memory that does not indicate a permanent hardware...
• Soft keyA button on an electronic device whose function changes depending on the current operating mode or context...
• Soft landingA controlled descent and touchdown of an aircraft or spacecraft onto a surface without damage to the vehicle...
• SoftroaderA passenger vehicle designed with styling cues and some capabilities of an off-road vehicle, but built on a...
• Software defined radioA radio communication system where components traditionally implemented in hardware are instead executed...
• SoftwoodWood obtained from coniferous trees, which are characterized by needles or scales and cones. These trees...
• SOHOSolar and Heliospheric Observatory: A spacecraft developed by the European Space Agency (ESA) and NASA to...
• Soil fertilityThe capacity of soil to provide the necessary compounds and conditions for plant growth, including nutrients...
• Soil stackA vertical pipe in a plumbing system that carries waste from toilets and other fixtures containing human...
• SoiledDescribing agricultural produce, equipment, or livestock that is contaminated with dirt, manure, or other...
• Solar generatorA portable power system that converts sunlight into electricity and stores it in an integrated battery for...
• Solar powerThe generation of electricity or heat from sunlight. This energy conversion occurs either directly through...
• Solar sailA method of spacecraft propulsion that uses the radiation pressure from sunlight to generate thrust. Large...
• SolarizeTo use solar energy to heat soil, typically by covering moist soil with clear plastic sheeting during hot...
• Solder maskA protective polymer coating applied to a printed circuit board (PCB) that covers the copper traces but...
• SoleThe floor or lower surface of an underground mine roadway, tunnel, or working area. It is the surface on...
• SolenoidAn electromagnetic device that converts electrical energy into linear mechanical motion. It consists of a...
• SolidA printed area that is completely covered with a single, unmodulated color of ink, without any halftone dots...
• Solid modelA complete and unambiguous digital representation of a three-dimensional object, defining its volume and...
• Solid rocketA type of rocket motor that uses a propellant in a solid, pre-mixed form, containing both fuel and oxidizer...
• Solid-stateDescribing electronic devices or systems that rely on semiconductor components rather than vacuum tubes or...
• Solid-state batteryA type of battery that uses solid electrodes and a solid electrolyte, instead of the liquid or polymer gel...
• SolionAn electrochemical device that uses the movement of ions in a solution to perform electronic functions like...
• SollarA platform or landing constructed within a mine shaft, serving as a staging area for hoisting operations or...
• Somersault signalAn early semaphore signal, introduced by the Great Northern Railway in Britain, whose arm pivots about its...
• SonarA technique that uses sound waves to detect objects and measure distances underwater. It involves...
• Sonic boomA loud, explosive sound that occurs when an object accelerates through the air at a speed exceeding the speed...
• SonotubeA brand name for a cylindrical fiber form used as a disposable mold for pouring concrete columns. These forms...
• SOPA Standard Operating Procedure, which is a set of step-by-step instructions compiled by an organization to...
• SorbitizationA heat treatment process applied to steel to produce a microstructure known as sorbite. This involves heating...
• SorbitizeTo subject steel to a specific heat treatment that results in a sorbitic microstructure. This process...
• SORNA formal declaration made to the UK vehicle licensing agency (DVLA) that a registered vehicle is being kept...
• SortieA single mission or operational flight by one military aircraft, from takeoff to landing. The term quantifies...
• SouffléA decoration on ceramic ware made of very small drops or sprinkles of color, applied as if blown on from a...
• Sound cardAn internal expansion card or integrated circuit that provides audio input and output capabilities to a...
• SoundboardAn electronic mixing console used to combine, process, and route audio signals from multiple sources to...
• Sounding rocketAn unguided rocket designed to carry scientific instruments on a suborbital flight to perform experiments and...
• Souped-upDescribing a standard engine or vehicle that has been modified to increase its power, performance, and speed...
• SourceThe origin of an electrical signal, power, or data within an electronic circuit or system. It can refer to a...
• South poleThe end of a magnet or electromagnet from which magnetic field lines are conventionally considered to enter...
• SouthbridgeA microchip on a computer's motherboard responsible for managing the slower input/output functions. It...
• Space chargeAn accumulation of net electric charge within a region of a vacuum tube, semiconductor, or other device...

898 of 7,311 terms in Industrial and trades terminology (MLC-0113). Request the full dataset.