Industrial and trades terminology · MLC-0113

Industrial and trades terms: S (900)

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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 high-quality wrought iron produced through a specific refining process, known for its strength and...
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 operational state for an aircraft system or component that minimizes risk or damage when a fault or...
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 durable twill fabric with a smooth, lustrous surface on one side, achieved through a satin weave, and a...
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...
SBHA stand-by to hammer, a status in offshore pile driving operations indicating that the hydraulic hammer is...
SBPSAn abbreviation for Standby Power System, an electrical system that provides backup power to a facility...
SCAStructural Corrosion Assessment, a systematic evaluation of an aircraft's airframe to identify and quantify...
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 visual inspection tag attached to scaffolding structures, indicating their current status regarding safety...
ScaffoldA temporary elevated work platform constructed from metal tubing, planks, and couplers, providing access for...
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 busA type of pipeline pig, named for its characteristic yellow color and long, articulated body. It is used for...
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 mechanical linkage in a helicopter's rotor system that connects the rotating swashplate to the non-rotating...
Scissors crossoverA complex track arrangement that allows trains to cross from one track to another in either direction...
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 shut down a nuclear reactor rapidly and completely by inserting all control rods into the core. This...
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...
ScrubberAn air pollution control device that removes particulates and gases from industrial exhaust streams. It...
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 transportation connection, such as a bridge or tunnel, constructed across a body of seawater to link two...
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 lockA mechanical device that secures a valve's seating component in place, preventing it from rotating or...
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 designated physical area of an aircraft structure, such as a portion of the fuselage or wing, used for...
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 inherent ability of a structure or object to return to an upright or stable position after being tilted...
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 method used in internal combustion engines to independently control the opening and closing times of intake...
SERAA former UK public body, the Strategic Rail Authority, that provided strategic direction for the railway...
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 Synthetic Ester, a type of high-performance lubricant used in aviation gas turbine...
SetThe process by which a cementitious material like concrete or mortar hardens and gains strength after being...
Set fairA condition describing a surface or material that has been prepared and is ready for the next stage of...
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 type characters and spacing materials into lines and paragraphs according to a specific layout or...
Set up to oneselfA practice in letterpress printing where a compositor arranges type and spacing material for a job in a...
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 effectAn optical phenomenon observed when light passes through a transparent material containing small, localized...
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...
ShambleA type of meat market or slaughterhouse, particularly one with stalls where butchers display and sell their...
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 defect in a concrete or asphalt surface characterized by a raised, sharp-edged projection that resembles a...
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 implement designed to remove very thin layers of material from a workpiece, producing a fine finish...
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 large, intact slab of coal that has been cut from the coalface but has not yet broken up into smaller...
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 type of folder or bone folder, traditionally made from a sheep's foot bone, used in bookbinding and...
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 tie that has been deliberately bent and twisted, often by heating it in a bonfire, to render a...
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 worker responsible for moving railcars or other heavy equipment within a mine or industrial site. This...
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 railway track built to bypass a section of the main line that is out of service for 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 hand-held tool used in letterpress printing to tighten lines of type within a composing stick. It consists...
Shop headThe factory-formed head of a rivet, distinguished from the field head which is formed on-site during...
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 crossA line or mark printed on a sheet of paper that indicates the center of the sheet in one dimension. It serves...
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 worker responsible for operating a shuttle car or similar transport vehicle within a mine or industrial...
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 type of mooring winch where the drum is oriented with its axis parallel to the ship's side, rather than...
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 procedure where a train crew verifies the indication of a railway signal against their route authority or...
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 type of tone generator used to produce the 2600 Hz single-frequency tone required to manipulate early...
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...
SimaticA brand of programmable logic controllers (PLCs) and automation systems manufactured by Siemens. These...
SIMMA type of memory module, a Single In-line Memory Module, containing random-access memory chips mounted on a...
SimpleA system of cords in a drawloom or Jacquard loom that connects the harness cords to the pattern-making...
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 footA common measurement or dimension in construction and trades, referring to a length of six feet. This...
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 flat board with four wheels, primarily used for recreation and sport, but also adapted for industrial...
SkeinA quantity of yarn, thread, or rope loosely coiled and knotted into a looped bundle of a specific length...
SkewThe phenomenon in synchronous digital circuits where the same clock signal arrives at different components at...
Skew bevel gearA type of bevel gear where the axes of the intersecting shafts are not in the same plane, creating a...
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...
SkifflingThe process of lightly scraping or cleaning the surface of a rock face or mineral deposit. This action...
Skim pitA shallow excavation made to remove a thin, superficial layer of overburden or mineral deposit. This type of...
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 hypothetical or theoretical device that would allow an aircraft to remain stationary in the air without...
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...
SlamTo close a circuit breaker or switch into a faulted circuit, resulting in an immediate and forceful trip...
SlantAn inclined tunnel or passageway driven into a mineral deposit or coal seam from the surface. This access...
Slap markA temporary or permanent identification mark applied to the skin of livestock, particularly pigs, using a...
Slap markerA hand-held tool used in livestock management to apply temporary identification marks to animals. It consists...
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 type of emergency or parking brake used on trams and light rail vehicles, consisting of a skid or shoe that...
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 type of concentrating table used in mineral processing to separate valuable minerals from gangue based on...
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 move a section of railway track laterally, either to correct alignment, adjust curvature, or shift the...
SleyThe number of warp threads per inch in a woven fabric, a key determinant of the fabric's density and texture...
SlickA smooth, polished surface or coating applied to components to reduce friction and wear. This finish is often...
SlickerA hand tool used in foundry work for smoothing and finishing the surfaces of sand molds before casting. It...
SlingA device made of rope, wire, chain, or webbing, used to lift and secure cargo or equipment on a vessel...
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...
SlotA designated time interval within a scheduling system for the transmission, distribution, or trading of...
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 controlA mechanism or system designed to regulate the operational speed of machinery or processes at reduced rates...
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 remove a line of type from a printing form, typically a metal slug cast by a Linotype machine. This action...
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...
SmallDescribing a manufacturing or production run that involves a limited quantity of items, contrasting with mass...
Small applianceA portable or semi-portable electrical machine used for household or light commercial tasks. These devices...
Small leaderA narrow vein or stringer of mineral that is too thin to be mined profitably on its own but indicates the...
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 textAn obsolete name for a size of printing type, equivalent to approximately 20 points in the Anglo-American...
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 type of crushing machine used in mineral processing to reduce the size of mined ore or rock. This equipment...
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 explosionA violent ignition of unburned fire gases that have accumulated in a confined space, often occurring when...
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...
SmutA fine, black, powdery residue that adheres to coal surfaces, indicating the presence of softer, friable...
SnailA cam or eccentric mechanism designed to produce a slow, gradual motion or to control the timing of an...
SnakeA flexible, non-rotating rod or wire used to guide a rope, cable, or wire through a confined or obstructed...
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...
SnatchA sudden, uncontrolled movement or jolt experienced by an aircraft or its components, often due to...
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 specialized piercing nozzle mounted on an extendable boom or articulated arm of a fire apparatus, designed...
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 thin, soft layer of earthy or clay-like material, such as shale or fireclay, found immediately adjacent to...
Soap offA process in textile finishing where residual sizing agents, lubricants, or other processing chemicals are...
SOBThe Statement of Basis, a document prepared by regulatory agencies to explain the rationale and technical...
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 small, thin metal tube used by glassblowers to inflate small details or specific areas of a glass object...
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 type of railway semaphore signal where the arm pivots near its center, allowing it to 'somersault'...
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...
SORNAn abbreviation for Statutory Off Road Notification, a legal declaration in the United Kingdom informing the...
SortieA single mission or operational flight by one military aircraft, from takeoff to landing. The term quantifies...
SouffléA blistering or bubbling defect on the surface of a glaze or ceramic body that occurs during the firing...
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...

900 of 7,361 terms in Industrial and trades terminology (MLC-0113). Request the full dataset.