Industrial and trades terminology · MLC-0113

Industrial and trades terms: F (383)

• FABA fabrication plant, or "fab," is a facility where semiconductor devices are manufactured. These plants...
• FabricThe spatial arrangement and orientation of mineral grains, rock fragments, or other components within a rock...
• FACA naval designation for a small, swift warship designed for offensive operations, primarily armed with...
• FacadismA practice in architectural preservation where only the facade or exterior shell of a historic building is...
• FaceThe primary functional or working surface of a component, tool, or workpiece. In machining, it is the flat...
• FacesheetThe outer layer of a composite panel or sandwich structure, providing strength, rigidity, and surface finish...
• FaceworkThe process of excavating ore or coal directly at the working face of a mine. This includes all activities...
• FacingA machining operation performed on a lathe or milling machine to create a flat, smooth surface perpendicular...
• Factory headThe pre-formed head of a rivet, manufactured as part of the rivet shank before installation. This head is set...
• Factory resetThe restoration of an electronic device's software to its original manufacturer settings, also known as a...
• Factory secondA manufactured product that has minor cosmetic flaws or slight imperfections but is still fully functional...
• Factory settingThe original, pre-configured state of a hardware device or software program as it was set by the manufacturer...
• FactotumA decorative initial letter, often large and elaborate, that contains an empty space within its design to...
• Fade inThe gradual increase in the amplitude or intensity of an audio or video signal from silence or darkness to a...
• Fade outA gradual reduction in the amplitude or intensity of an electrical signal, sound, or light over a period...
• FairTo shape or smooth a surface to eliminate irregularities and create a continuous, flowing line or curve. In...
• Fair IsleA traditional knitting technique that uses multiple colors to create intricate patterns, typically geometric...
• Fairey-Youngman flapA type of aircraft flap that extends rearward and then rotates downward to increase both wing area and...
• FallThe part of a tackle's rope that is hauled upon to lift a load, or the entire length of rope used in a block...
• Fall outAn error in printing where a piece of type or an image block becomes dislodged from the form during the...
• Fall plateA hinged or sliding plate that bridges the gap between a locomotive and its tender, or between two railway...
• Fall timeThe duration required for a signal to transition from a high voltage level to a low voltage level. This...
• FallbackA contingency amount included in a project budget or schedule to cover unforeseen events, risks, or scope...
• FallowA period during which arable land is left unseeded for one or more growing seasons. This practice allows the...
• Fallow cropA crop grown on land that would otherwise be left fallow, primarily to improve soil health rather than for...
• FalseA logical state representing the absence of a condition or the value zero in a binary system. In digital...
• FalseheartA discoloration or decay in the central portion of a tree trunk that does not originate from the pith but...
• Fam tripA familiarization trip offered by an airline, manufacturer, or service provider to allow potential clients...
• FamilA familiarization trip, a low-cost or complimentary journey offered by travel suppliers like airlines...
• FANA mechanical device that creates airflow by rotating blades, used for ventilation, cooling, or moving gases...
• Fan carA piece of railway maintenance equipment designed to clear snow, sand, or other light debris from the tracks...
• Fancy stitchA decorative knitting or crochet stitch pattern that goes beyond basic stitches like knit, purl, single...
• FangA wooden air duct or brattice used in mining to direct ventilation currents to the working face. These...
• FanhouseA structure housing the main ventilation fan or fans for a mine. This building is typically located at the...
• FaninThe maximum number of input signals that can be reliably connected to a logic gate or other digital circuit...
• Fanny padA protective cushion or pad worn by workers, particularly those who spend extended periods kneeling or...
• FanoutThe maximum number of digital logic gates that the output of a single gate can reliably drive while...
• Far fieldThe region around an antenna or radiating source where the angular field distribution is essentially...
• FarmeeThe party that acquires a working interest in an oil, gas, or mineral lease from another party, known as the...
• FarmerA lessee or contractor who works a mine or a section of a mine, paying a royalty or fixed rent to the owner...
• Farmers' satinA strong, durable cotton fabric with a satin weave that creates a smooth, glossy surface on one side and a...
• FarmorThe owner of a working interest in an oil, gas, or mineral lease who assigns a portion of that interest to...
• FarmyardAn open area of land immediately adjacent to the main farm buildings, such as the farmhouse and barns. This...
• FascetA conical or cylindrical tool, traditionally made of iron, used in glassmaking to shape the neck of a bottle...
• FascineA bundle of brushwood, branches, or other long, slender materials, tightly bound together. These bundles are...
• FastDescribing a railway line, track, or service intended for higher speeds and fewer stops compared to a...
• Fast busy signalAn audible tone in telephony indicating that all available circuits or lines are busy, or that the called...
• Fast trackA railway line built to standards that permit high-speed operation, characterized by a continuous welded...
• FastigiateDescribing a plant growth habit where branches grow upright and parallel to the main stem, forming a narrow...
• FastWide SCSIAn enhanced version of the Small Computer System Interface (SCSI) standard, designed for connecting...
• FatDescribing composed typographic matter that contains an excessive amount of spacing, either between words or...
• Fat lavaA distinctive glaze effect on ceramics, particularly popular in West German pottery from the 1960s and 1970s...
• Fat quarterA pre-cut piece of fabric measuring approximately 18 by 22 inches, obtained by cutting a yard of fabric in...
• FathomA unit of length used in maritime contexts to measure water depth, rope, or anchor chain. It is a customary...
• FathomageThe depth of a body of water or an underground excavation, measured in fathoms. A fathom is a unit of length...
• Faucet aeratorA small, mesh screen device screwed onto the end of a faucet spout that mixes air into the water stream. This...
• FaultA fracture or zone of fractures in rock along which there has been observable displacement. Faults result...
• Fault currentAn abnormal electrical current that flows through a circuit due to an insulation failure or a short circuit...
• FayTo join two pieces of material, such as wood or metal, so that their surfaces are in close and continuous...
• FCAFiat Chrysler Automobiles, a multinational automotive manufacturing corporation formed from the merger of...
• FCCA Forwarder's Cargo Receipt, a document issued by a freight forwarder to a shipper. It serves as proof that...
• FCDA device, known as a Fuse Combination Disconnector, that integrates a switch-disconnector and fuses into a...
• FCUA Fuel Control Unit, a component in a gas turbine engine that meters the correct amount of fuel delivered to...
• FDA Flight Director, an instrument system on an aircraft's primary flight display that computes and indicates...
• FDDA method of transmitting and receiving signals simultaneously using different frequency bands. One band is...
• FDMFused Deposition Modeling, an additive manufacturing process that builds three-dimensional objects layer by...
• FDRA non-destructive testing method used to characterize and locate faults in cables, transmission lines, and...
• FeatherA thin, projecting strip of wood or other material, often integral to a joint or component. It can refer to...
• FeatherableDescribing a propeller system that allows the blades to be rotated to an angle nearly parallel to the...
• FeatherboardA safety accessory used in woodworking to hold a workpiece firmly against a fence or tabletop during cutting...
• FeatheredDescribing an edge that has been tapered to a very thin, fine line, blending smoothly into an adjacent...
• Feathering stripA thin, tapered piece of material, often wood or plastic, used in roofing or siding applications. It creates...
• FEDA type of flat panel display technology that uses large-area field electron sources to provide electrons that...
• Fed cattleCattle that have undergone a period of intensive feeding in a feedlot to increase their weight and improve...
• FederatedDescribing a system or network composed of multiple independent entities that operate together under a common...
• FederationA system architecture where multiple independent entities or domains agree to share resources, data, or...
• Feed dogA mechanism found on sewing machines, consisting of small, toothed bars that rise and fall through slots in...
• FeedbackThe process of returning a portion of the output signal of a system back to its input, either to stabilize...
• Feeder cattleYoung cattle that have been weaned and are ready to be placed in a feedlot for further growth and fattening...
• Feeder stationAn electrical substation that supplies power to the overhead lines or third rail of an electrified railway...
• FeedlineA tube, pipe, or hose that transports fluid from a source, such as a tank or reservoir, to a point of use...
• Feed-throughA component or connection designed to pass an electrical signal or power through a barrier, such as a panel...
• FellTo break down or dislodge rock or coal from the working face of a mine, typically after blasting. This...
• Felled seamA strong and durable seam construction where the raw edges of the fabric are enclosed within the seam...
• Feller-buncherA heavy-duty forestry machine equipped with a cutting head that can fell trees and then gather them into...
• Felling headThe attachment on a feller-buncher or harvester that is responsible for severing trees from their stumps...
• FelsicDescribing igneous rocks that are rich in lighter elements such as silicon, oxygen, aluminum, sodium, and...
• FEMFinite Element Method, a numerical technique for finding approximate solutions to boundary value problems for...
• Female-to-maleDescribing a type of electrical connector or adapter where one end has a receptacle (female) and the other...
• FemtobecquerelA fractional unit of radioactivity representing one quadrillionth (10⁻¹⁵) of a becquerel. The becquerel, an...
• FemtobelA logarithmic unit of ratio equal to one quadrillionth (10⁻¹⁵) of a bel. The bel is a unit that quantifies...
• FemtocandelaA unit of luminous intensity in the International System of Units (SI), equal to 10^-15 candelas. This...
• FemtocellA small, low-power cellular base station designed to provide improved cellular coverage and capacity within a...
• FemtocoulombA unit of electric charge within the International System of Units (SI), equal to one quadrillionth (10^-15)...
• FemtofaradA unit of electrical capacitance in the International System of Units (SI), equal to one quadrillionth...
• FemtogramA unit of mass in the metric system, equivalent to 10^-15 grams. This minute measure is used to quantify the...
• FemtojouleAn SI derived unit representing an amount of energy, work, or heat, equivalent to one quadrillionth (10⁻¹⁵)...
• FemtokatalA unit of catalytic activity in the International System of Units (SI), representing 10^-15 katals. This...
• FemtometreA unit of length in the metric system, equivalent to 10^-15 metres. This extremely small measure is used to...
• FemtosecondA unit of time equal to one quadrillionth of a second, or 10⁻¹⁵ seconds. This extremely short duration is...
• FenderA cushioning device placed between a vessel and a dock, another vessel, or a pier to absorb impact and...
• Ferric carbideAn iron carbide compound with the chemical formula Fe3C, also known as cementite, which is a hard and brittle...
• Ferroelectric shutterA type of optical shutter that controls light transmission by applying an electric field to a ferroelectric...
• Ferry vanA type of railway goods wagon designed for transport on train ferries between networks with different loading...
• FestoonA system of looped cables or hoses used to manage and protect electrical power, control signals, or fluid...
• FETA type of transistor that controls the flow of current by applying a voltage to a gate electrode, which...
• FettleTo remove unwanted seams, ridges, or imperfections from a piece of ceramic ware before firing. This process...
• FettlerA worker responsible for removing excess material, such as flash, sprues, and risers, from metal castings or...
• FFFront-engine, front-wheel drive (FF) describes a vehicle layout where the engine is located at the front of...
• FFMAn abbreviation for full-face mask, a type of respirator that covers the entire face, including the eyes...
• FIAn abbreviation for fuel injection, a system that atomizes and delivers fuel directly into the engine's...
• FiberA natural or synthetic filament material characterized by its long, thin, and flexible structure, which can...
• FieldAn area or region where an electronic device or system operates, often outside of a controlled laboratory or...
• Field coilA wound wire coil that generates a magnetic field when an electric current passes through it. This magnetic...
• Field emission displayA type of flat panel display technology that uses an array of microscopic electron emitters to excite...
• Field headThe head formed on a rivet during its installation at the job site or in the field, as opposed to the...
• Field lensA lens placed near the intermediate image plane in an optical system, such as a telescope or microscope...
• Field magnetA magnet, either permanent or electromagnet, that produces the magnetic field within an electric motor or...
• Field of viewThe extent of the observable world that an optical instrument or sensor can capture at a given moment. It...
• Field seamA joint or connection made on-site during the installation of materials, rather than in a factory or...
• Field stopAn aperture placed at or near an intermediate image plane in an optical system to define the extent of the...
• FieldbusA digital, two-way, multi-drop communication network used in industrial automation and control systems to...
• Field-programmable gate arrayAn integrated circuit that can be configured by a customer or designer after manufacturing, rather than being...
• FieldworkWork performed outdoors in the natural environment where crops are grown or livestock are raised, as opposed...
• Fifth wheelA coupling device mounted on the frame of a tractor unit, designed to connect and support the front end of a...
• FilamentA continuous, single strand of fiber of indefinite length, as opposed to a staple fiber which is short...
• Fill siteA designated location where excavated earth, rock, construction debris, or other non-hazardous waste...
• Fill soilEarthen material used to raise the elevation of a site, backfill excavations, or create engineered...
• FillerA material added to wood products, such as particleboard or plywood, to improve their properties, reduce...
• FilletA narrow strip of wood, with a concave or triangular cross-section, used to cover a seam or joint between two...
• Filling siteA location specifically set up for replenishing the tanks of mobile water-supply apparatus, such as fire...
• Fin gripperA type of robotic end effector designed for grasping delicate or irregularly shaped objects using multiple...
• Final pointThe last surveyed position in a traverse or control network, serving as the endpoint for a series of...
• Final setting timeThe point at which a cementitious material, such as concrete or mortar, has hardened sufficiently to resist...
• FingerA narrow pier or jetty extending from a main dock or shore, providing individual berthing spaces for smaller...
• Finger gripA molded or textured surface on a tool, handle, or component designed to provide a secure and comfortable...
• Finger jointA woodworking joint made by cutting a series of interlocking, finger-like projections on the ends of two...
• Finger-pieceA small, projecting part of a mechanism designed to be operated by a finger, providing a point of contact for...
• FinisherA machine or tool used in manufacturing and construction to apply a final surface treatment or to achieve a...
• FireTo detonate an explosive charge for the purpose of breaking rock in a mine or quarry. This controlled process...
• Fire alarmA system of interconnected devices designed to detect and alert occupants of a building to the presence of...
• Fire brigadeA team of trained personnel responsible for fire suppression, rescue operations, and other emergency...
• Fire bucketA container, traditionally made of metal or plastic and painted red, filled with sand or water for...
• Fire cabinetA wall-mounted enclosure designed to store fire safety equipment such as fire extinguishers, fire hoses, and...
• Fire companyA basic organizational unit within a fire department, consisting of a specific fire apparatus (such as an...
• Fire damperA device installed in a mine ventilation system designed to automatically close in the event of a fire. Its...
• Fire departmentA public or private organization responsible for providing fire suppression, emergency medical services...
• Fire engineA specialized vehicle equipped with pumps, water tanks, hoses, ladders, and other tools for firefighting and...
• Fire grenadeA sealed glass bulb or sphere containing a fire-extinguishing liquid, designed to be thrown into a fire. Upon...
• Fire hydrantA connection point in a water supply system that allows firefighters to tap into a pressurized water source...
• Fire ironAny of a set of long-handled tools used by the fireman to manage the fire in a steam locomotive's firebox...
• Fire serviceThe public or private organization responsible for providing firefighting, rescue, and emergency medical...
• Fire siteThe specific location where a fire incident has occurred or is actively burning. This area encompasses the...
• Fire truckA specialized vehicle equipped with pumps, water tanks, hoses, ladders, and other tools for firefighting and...
• FireballA large, incandescent sphere of burning gas and vapor that forms rapidly during a catastrophic event, such as...
• FirebellA mechanical or electrical bell used as an audible alarm to signal the outbreak of a fire. In industrial...
• FireboxA combustion chamber within a steam locomotive boiler where fuel, typically coal or wood, is burned to heat...
• FirebreakA natural or constructed barrier used to stop or slow the progress of a wildfire or prescribed burn. It...
• FiredDescribing a ceramic object that has been subjected to high temperatures in a kiln or open fire, causing...
• FiredampA combustible gas, primarily methane (CH4), found in coal mines that can form explosive mixtures with air. It...
• FirefighterA trained professional responsible for extinguishing fires, rescuing individuals from hazardous situations...
• FiregroundThe immediate area surrounding a fire incident where fire suppression and rescue operations are actively...
• FiremanA person whose primary duty involves extinguishing fires and responding to emergency situations, often within...
• FiresettingAn ancient mining technique involving heating a rock face with fire and then rapidly cooling it with water to...
• FirestopA passive fire protection system component used to seal openings and penetrations in fire-rated walls and...
• FirestreamThe flow of water or other extinguishing agent discharged from a nozzle or hose for the purpose of...
• FirewaterWater specifically designated and stored for fire suppression purposes in industrial facilities. This water...
• FiringThe process of heating ceramic materials to high temperatures in a kiln or open fire to harden and...
• First articleA sample part or assembly produced by a manufacturing process to verify that the process can consistently...
• First flushThe initial surge of runoff water from a surface, such as a field or urban area, following a period of dry...
• First Law of RoboticsA foundational ethical principle for robots, as conceived by Isaac Asimov, stating that a robot may not...
• First-order holdA method used in digital-to-analog conversion to reconstruct a continuous-time signal from discrete-time...
• FishTo retrieve an object that has fallen into a wellbore or has become detached from the drilling string. This...
• Fishing spaceThe clearance or gap between the head and foot of a rail and the corresponding parts of a fishplate, which is...
• FishmouthA wrinkle or pucker that forms in the overlap of roofing plies, particularly in built-up roofing systems...
• FishplateA metal bar bolted to the sides of two abutting rails to join them together. This connection maintains the...
• Fission rocketA theoretical or experimental rocket propulsion system that uses nuclear fission to heat a propellant to...
• Fit and finishThe quality of how well a vehicle's components, both interior and exterior, are assembled and aligned, and...
• FittingA component used to connect sections of pipe, tubing, or hose in fluid transfer systems. These parts allow...
• Five-alarmA classification indicating a large and severe fire incident that requires the response of multiple fire...
• FixA geographical position determined by visual observation, electronic navigation aids, or celestial...
• Fix it again TonyA derogatory phrase, often used as a backronym for the acronym FIAT (Fabbrica Italiana Automobili Torino)...
• FLA standard abbreviation for flight level, which is a nominal altitude of an aircraft, expressed in hundreds...
• FlagA piece of fabric or material, typically rectangular, attached to a staff or halyard, used for signaling...
• FlambéA decorative effect in ceramics characterized by variegated, streaky, or mottled colors, particularly reds...
• FlangeA projecting rim, collar, or rib on a component, used for attachment, support, or to increase strength. In...
• Flange lubricatorA device that applies lubricant to the wheel flanges of railway rolling stock, reducing friction between the...
• FlangewayA gap or channel provided in a railway track structure, such as at a level crossing or a switch, to...
• FlankThe straight surface of a gear tooth between the root circle and the top land, or the straight side of a...
• FlapA high-lift device attached to the trailing edge of an aircraft wing, designed to increase both lift and drag...
• FlappingA condition in a network where a route or interface repeatedly changes its state between up and down in rapid...
• FlashExcess material that escapes from the parting line of a mold or die during casting, forging, or injection...
• Flash cutA method of system migration or upgrade where the old system is completely replaced by the new system at a...
• Flash driveA portable data storage device that uses flash memory to store data, typically connecting to a computer via a...
• Flash for cashA fraudulent practice where a driver flashes their headlights to signal another driver to proceed, such as at...
• Flash fuelHighly combustible materials that ignite rapidly and burn with intense heat, contributing to the rapid spread...
• Flash memoryA non-volatile computer memory that can be electrically erased and reprogrammed, retaining data without...
• FlashcardA removable storage device containing non-volatile flash memory, used for data logging, firmware storage, and...
• FlasherAn electrical device in a vehicle that intermittently completes and breaks a circuit to cause the turn signal...
• FlashingThin pieces of impervious material installed to prevent water from penetrating a structure at joints or...
• Flashing collarA weatherproofing component installed around a pipe, vent, or other penetration through a roof or wall...
• Flashover voltageThe minimum voltage at which an electrical discharge occurs through the air or across the surface of an...
• FlatA nearly horizontal ore deposit or vein that cuts across the bedding planes of the surrounding host rock...
• Flat crossingA railway intersection where two or more tracks cross each other at the same level, without the use of points...
• Flat junctionA railway junction where tracks cross at the same level, requiring trains on one line to wait for trains on...
• Flat ladA mine worker, historically a boy or young man, responsible for managing the movement of tubs or trams at a...
• Flat lockA method of joining two pieces of sheet metal by folding their edges over each other and then flattening the...
• Flat railAn early type of railway rail consisting of a simple flat bar or strip of cast or wrought iron. These bars...
• Flat wagonA type of railway freight car characterized by an open, flat deck without sides or a roof. It is designed for...
• FlatcarAn open railway freight car with a flat deck and no permanent sides or roof, primarily used for transporting...
• FlatfieldA calibration image used in digital imaging to correct for non-uniformities in detector response and...
• FlatlockA type of seam used in textile manufacturing where two pieces of fabric are joined edge-to-edge, creating a...
• FlatpackA type of surface-mount integrated circuit package characterized by its low profile and leads that extend...
• FlatworkConcrete construction that involves pouring and finishing horizontal surfaces, such as slabs, sidewalks...
• Flax cottonA textile material derived from flax fibers that have been processed to mimic the soft, fluffy texture of...
• FleeceA non-woven fabric made from synthetic fibers, such as polyester or polypropylene, used in roofing and...
• Fleet leaderAn aircraft within a fleet that accumulates flight hours or cycles at a faster rate than other similar...
• FleetingTo guide a haulage rope laterally across the face of a winding drum so that it winds on or off in even...
• Flemish bondA bricklaying pattern characterized by alternating headers (the short end of the brick) and stretchers (the...
• FlexibleDescribing a material or component capable of bending or deforming without breaking, returning to its...
• FlighterThe helical blade or screw section that wraps around the central shaft of an auger or screw conveyor. This...
• Flint millA grinding apparatus used to pulverize flint or other hard minerals into a fine powder. This mill typically...
• Flip a bitchTo execute a U-turn with a vehicle, reversing its direction of travel in a single maneuver. This action...
• Flip-flopA fundamental digital electronic circuit that has two stable states and can store one bit of binary...
• FloatA weaving defect where a warp or weft yarn extends over several opposing yarns without interlacing, creating...
• Floating car dataTraffic information collected from vehicles equipped with GPS or other location-aware technologies...
• Floating groundA circuit's common reference point that is not electrically connected to the Earth ground of the main power...
• Floating-point unitA specialized part of a computer's central processing unit (CPU) or a coprocessor designed to perform...
• FlogTo separate grain or seeds from the stalk by beating the harvested crop with an implement such as a flail...
• FlongA papier-mâché material used in stereotyping to create a mold of a composed page of type. This flexible sheet...
• Flood testA method of checking the watertight integrity of a horizontal surface, such as a shower pan, roof, or plaza...
• FlooderA type of lighting fixture designed to produce a broad, intense beam of light that illuminates a wide area...
• FloorThe underlying rock or material directly beneath a mineral deposit, such as a coal seam or an ore body, in a...
• Floor itAn informal, colloquial instruction or action meaning to depress the accelerator pedal fully to the floor...
• Floor planA scaled diagram that shows the arrangement of rooms, spaces, and physical features from an overhead view...
• FloorplanningA stage in the design of an integrated circuit that involves arranging the major functional blocks and...
• Floppy diskA removable magnetic storage medium consisting of a thin, flexible magnetic disk encased in a square or...
• Floppy disk driveAn electromechanical device that reads and writes data to and from a floppy disk. It contains a spindle motor...
• FlotationA mineral processing technique that separates valuable minerals from gangue by exploiting differences in...
• Flotsam and jetsamDebris found floating on the surface of the sea or washed ashore. Flotsam consists of goods lost accidentally...
• FlounceA strip of fabric gathered or pleated and then attached to a garment or home furnishing item, extending...
• FlowerA typographic ornament, also called a fleuron, used for decoration in printed material. These...
• Flower crownA headpiece constructed from natural or artificial flowers, leaves, and sometimes other decorative elements...
• FloxA mixture of liquid fluorine and liquid oxygen, used as an oxidizer in some rocket propulsion systems. The...
• Fluid flywheelA hydrodynamic device that transmits rotational power from an engine to a gearbox through a fluid medium...
• Fluid mechanicsThe branch of mechanics concerned with the behavior of fluids, both liquids and gases, and the forces acting...
• FlushThe process of directing a stream of water or other fluid under pressure to dislodge and transport loose...
• Flush castA casting process where a molten metal is poured into a mold and then quickly poured out after a thin outer...
• FlutterAn undesirable oscillatory motion or vibration in a mechanical system, often caused by aerodynamic forces or...
• FluxoniumA type of superconducting qubit used in quantum computing, characterized by a large shunting inductance and a...
• Fly-inA method of transporting workers to remote construction sites, particularly in areas with limited road...
• Flying meetA grade-separated railway junction where two parallel tracks of a multi-track line cross over each other...
• FlyweightA small, pivoted mass in a centrifugal governor or similar mechanism that moves outward due to centrifugal...
• FlywheelA heavy rotating disk used to store rotational energy and smooth out variations in angular velocity in a...
• FoamAn extinguishing agent consisting of an aggregate of air-filled bubbles, used to smother fires, particularly...
• Focal depthThe distance along the optical axis over which an image is perceived as acceptably sharp, also known as depth...
• Focal planeThe plane perpendicular to the optical axis where light rays originating from a point on the optical axis at...
• Focal pointThe specific point on the optical axis where parallel rays of light converge after passing through a...
• FocalizationThe action of a lens or mirror system to converge or diverge light rays to or from a single point, known as...
• FocusThe state of an optical system where light rays originating from a specific object point converge to form a...
• Fodder radishA fast-growing cover crop cultivated primarily for its ability to improve soil structure, scavenge nutrients...
• Fog lampA type of automotive lighting designed to improve visibility in conditions of fog, heavy rain, or snow. Fog...
• Fog lightA type of automotive lighting designed to improve visibility in conditions of fog, heavy rain, or snow. Fog...
• Fog outTo apply water in a fog pattern from a hose nozzle to cool a compartment or protect firefighters from radiant...
• Fog signalA device placed on a railway track to provide an audible warning to train drivers during periods of reduced...
• FOHAn abbreviation for Front of House, referring to the public-facing areas of a passenger railway station...
• FoilThe cross-sectional shape of a wing, propeller blade, or rotor blade designed to generate an aerodynamic...
• FolioThe page number on a printed sheet, which can also include the publication title, chapter title, or author's...
• FonduA printing technique for creating a gradual blend of colors, from the French word for 'melted'. In this...
• FootThe base or bottom part of a machine, structure, or component that provides support and rests on a foundation...
• Foot stickA metal or wooden bar used in letterpress printing to secure the type within a chase. This tool is placed at...
• FootholeA small indentation or step cut into the side of a mine shaft or tunnel to provide a secure foothold for...
• FootplateA horizontal timber or metal member that forms the base of a wall or partition, resting directly on the...
• FootrimThe raised ring or base at the bottom of a ceramic vessel, designed to lift the main body of the piece off...
• FootstickA metal or wooden bar used in letterpress printing to secure the type within a chase. This tool is placed at...
• FootwallThe body of rock that lies underneath an inclined fault, vein, or mineral deposit. In underground mining...
• FootwheelA large wheel, often driven by a foot pedal or treadle, used to provide rotational power to a machine or...
• FOPA foreign object prevention program implemented in aviation maintenance to eliminate potential hazards from...
• Force pairTwo forces of equal magnitude acting in opposite directions along the same line of action, resulting in a net...
• Forced inductionThe process of increasing the pressure, and thus the density, of air entering an internal combustion engine's...
• ForcingA horticultural technique used to accelerate the growth and flowering of plants outside their natural season...
• ForefootThe forwardmost section of a ship's hull, extending from the bow to the point where the main body of the...
• Fore-overmanA first-line supervisor in a coal mine, ranking below an overman and above the deputies. The fore-overman is...
• ForesightA reading taken with a leveling instrument on a staff held at a point of unknown elevation. This reading is...
• Forest gardeningA sustainable land management system that mimics the structure and ecology of a natural woodland ecosystem...
• ForestoneA movable cast-iron bar positioned at the front of an ore hearth, specifically in lead smelting operations...
• ForgeTo shape metal by hammering, pressing, or rolling, typically while it is hot, to achieve a desired form and...
• ForgeabilityThe capacity of a material to undergo plastic deformation under compressive forces without fracturing...
• ForgeableDescribing a metal or alloy with sufficient ductility and malleability to be shaped by forging, which...
• ForkA branching point in a mine tunnel or roadway where two or more passages diverge. This junction requires...
• Fork beamOne of two horizontal load-bearing arms, also called tines or blades, that extend from the front of a...
• Fork oilThe hydraulic fluid used inside the front suspension forks of a motorcycle or bicycle to provide damping. As...
• FormAn assembly of type, blocks, and spacing material locked together in a chase, ready for printing on a...
• Form factorA dimensionless quantity that describes the shape or geometric configuration of an object or system...
• FormateA salt or ester of formic acid used as a de-icing or anti-icing agent for airport runways, taxiways, and...
• FormboardA rigid panel, typically made of expanded polystyrene (EPS) or other insulating material, used as a permanent...
• FormworkA temporary or permanent mold into which concrete or similar materials are poured to create a desired...
• Forward echoA reflected signal that travels in the same direction as the original transmitted pulse within a transmission...
• Forward linkThe communication channel that transmits signals from a central control station to a remote or subordinate...
• FoundTo melt raw glass materials in a furnace to create a molten state suitable for working. This process involves...
• FoundressA woman who owns, manages, or works in a foundry, specializing in the craft of founding or casting metal. The...
• Four footA common measurement reference, particularly in construction and carpentry, referring to a length of four...
• Fourier transformA mathematical operation that decomposes a time-domain signal into its constituent frequencies, representing...
• Four-on-the-floorA manual transmission system where the gear shift lever is mounted directly on the floor of the vehicle...
• Four-seaterAn informal designation for a vehicle, typically a car or light aircraft, designed with seating for four...
• Four-strokingA condition in a two-stroke engine where it intermittently fires every fourth stroke instead of every second...
• Fourth classA historical designation for the most basic and inexpensive form of passenger accommodation on a railway...
• Fourth railAn additional rail alongside the running rails in some electric railway systems, used to carry the return...
• Four-trackingThe practice of equipping a railway mainline with four parallel tracks, allowing for a high volume of traffic...
• Four-wheel-driveA drivetrain system that powers all four wheels of a vehicle, either simultaneously or on demand, to improve...
• Fowler flapA type of high-lift device on an aircraft wing that extends rearward and downward, increasing both the wing's...
• FoxA type of wedge or small metal key used to expand the split end of a bolt or pin to secure it within a hole...
• FoxingA type of age-related discoloration that appears on paper, often as brown or yellow spots or blotches. This...
• FoxtailA thin metal wedge inserted into a split at the end of a bolt, pin, or tenon before it is driven into a hole...
• FPCA technology for manufacturing electrical circuits by mounting electronic components on a flexible plastic...
• FPDPThe Front Panel Data Port, a high-speed parallel data interface standard primarily used in digital signal...
• FPGAAn acronym for Field-Programmable Gate Array, an integrated circuit containing a matrix of configurable logic...
• FPUA specialized processor circuit designed to carry out operations on floating-point numbers with high speed...
• FrameThe main structural chassis of a piece of agricultural equipment, such as a tractor or implement, to which...
• Frame railA primary structural component of a vehicle's chassis, forming the main longitudinal members that support the...
• Frame tableA specialized piece of equipment used in automotive body shops to repair and straighten vehicle frames that...
• Frame upTo construct the skeletal structure of a building, typically using timber or steel members, which defines the...
• Frame-alignment recovery timeThe duration required for a receiver in a digital communication system to re-establish synchronization with...
• Framing hammerA heavy-duty hammer designed for rough carpentry and framing applications, characterized by its longer handle...
• Framing squareA large, L-shaped steel or aluminum tool used by carpenters and builders for laying out and marking building...
• Free and easyA type of travel package that includes basic components like flights and accommodation but leaves the...
• Free surface effectThe reduction in a vessel's stability caused by the movement of liquid within a partially filled tank. As the...
• Free-fall timeThe duration it takes for an object to fall a certain distance under the influence of gravity alone, assuming...
• Free-hangingDescribing a component or system that is suspended from above without additional support from below or the...
• FreelancerA self-employed individual who provides services to businesses on a contract or project basis, rather than as...
• FreewheelA mechanism that allows a shaft or component to rotate freely in one direction while engaging to transmit...
• Freight operating companyA business entity that provides rail transport services specifically for goods and materials. These companies...
• Freight-onlyDescribing a railway line, station, or section of track exclusively dedicated to the movement of goods and...
• French cleatA hanging system consisting of two interlocking pieces of wood, each with a 45-degree bevel cut. One piece is...
• French cutA style of garment design, particularly for swimwear or lingerie, characterized by high-cut leg openings that...
• French seamA durable and neat seam finish that encloses the raw edges of the fabric within the seam itself. It involves...
• FrequencyThe number of cycles or repetitions of a periodic phenomenon per unit of time. In electrical systems, it...
• Frequency assignmentThe process of authorizing the use of a specific radio frequency, or a block of frequencies, to a particular...
• Frequency bandA continuous range of frequencies within the electromagnetic spectrum that is allocated for a specific...
• Frequency domainA representation of a signal or system as a function of frequency, rather than as a function of time. This...
• Frequency multiplierA circuit that produces an output signal with a frequency that is an integer multiple of its input frequency...
• FreshDescribing agricultural produce that has been recently harvested and has not undergone any form of...
• Fresnel numberA dimensionless quantity that characterizes the diffraction effects of an aperture or obstacle in an optical...
• FretThe erosion or wear of rock or mineral surfaces due to friction, often caused by the movement of water, air...
• FriarA printing defect characterized by an area of insufficient ink coverage, resulting in a lighter or faded...
• FriggerA whimsical or non-functional glass object made by a glassblower during personal time or as a practice piece...
• FrisketA sheet of paper or other material with sections cut out to expose the areas of a printing form that are to...
• FrogA component in railway trackwork that enables the wheels of a train to cross from one rail to another at an...
• FroggingThe process of undoing knitted or crocheted stitches, pulling the yarn out of the fabric to correct errors or...
• Front seatThe seating position located at the forward-most part of a vehicle's cabin, directly in front of the...
• Front wingThe body panel located over the front wheel of a vehicle, also known as a fender in North American English...
• Froth packA two-component polyurethane foam system dispensed from pressurized containers, designed for sealing gaps and...
• FroweyDescribing timber that is brittle and soft, lacking strength and resilience. This condition makes the wood...
• Frue vannerA type of concentrating machine used in mineral processing to separate fine-grained heavy minerals from...
• FrunkA portmanteau of "front" and "trunk," referring to a storage compartment located at the front of a vehicle...
• FSMA Finite State Machine, a mathematical model of computation used to design sequential logic circuits and...
• FTAAn abbreviation for Fault Tree Analysis, a top-down, deductive failure analysis method in which an undesired...
• FTSA safety mechanism, known as a Flight Termination System, installed on unmanned aircraft and space launch...
• FTTDFiber to the Desk, a fiber optic network architecture where optical fiber extends directly to the user's...
• FTTXFiber to the X, a general term for any broadband network architecture that uses optical fiber to provide the...
• FubariteAn informal, slang term in geology and mining for a rock sample that is unidentifiable or useless for...
• Fudge boxA small, removable section within a newspaper page form, designed to allow for last-minute insertions or...
• Fuel cellAn electrochemical device that converts the chemical energy from a fuel, such as hydrogen, and an oxidant...
• Fuel filterA device installed in the fuel line of an internal combustion engine that screens out contaminants from the...
• FulcrumThe pivot point around which a lever rotates or is supported. It is the fixed point that allows the lever to...
• Full adderA digital circuit that performs addition on three binary digits, producing a sum and a carry-out bit. It...
• Full boardA hotel or accommodation rate that includes three meals per day: breakfast, lunch, and dinner. This...
• Full-lengthDescribing a garment, such as a coat, dress, or robe, that extends to the wearer's ankles or the floor. This...
• Fully fashionedA method of knitting garments, particularly hosiery and sweaters, where the fabric is shaped directly on the...
• Fully-stockedDescribing a forest stand where the density of trees is optimal for maximizing timber production or other...
• Funnel boxA container with a tapering, funnel-shaped bottom used in mining and material handling to guide the flow of...
• FurTo apply thin strips of wood or metal, called furring strips, to a wall, ceiling, or floor to create a level...
• Fur outTo install strips of wood or metal, known as furring strips, onto a surface to create a level plane or an air...
• FurniturePieces of wood or metal less than type high used in letterpress printing to fill the empty spaces in a chase...
• FurringThe process of installing strips of wood, metal, or other material, called furring strips, to a wall or...
• FuseA safety device in an electrical circuit that protects against overcurrent by melting and breaking the...
• Fuse wireA thin, low-melting-point metallic conductor designed to be the sacrificial element within a fuse, protecting...
• FuselageThe main body section of an aircraft, serving as the primary structure to which the wings, empennage, and...
• Fusion rocketA theoretical propulsion system for spacecraft that generates thrust by harnessing energy from nuclear fusion...
• Fussy cutA technique in quilting and fabric crafts where specific motifs or designs from a printed fabric are...
• FuzeA device containing a combustible train or an explosive charge, used to initiate a larger explosive charge in...
• Fuzzy controllerA control system based on fuzzy logic, which uses linguistic rules and approximate reasoning to make...
• FWDAn abbreviation for front-wheel drive, a drivetrain configuration where the engine's power is delivered...

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