Industrial and trades terminology · MLC-0113

Industrial and trades terms: H (281)

• HACA system designed to prevent a vehicle from rolling backward when starting on an incline. It automatically...
• HackerAn individual who gains unauthorized access to computer systems or networks, often with malicious intent...
• HackingA process in masonry where the surface of a stone or brick is roughened or scored with a chisel or hammer...
• HadeThe angle of inclination of a fault or vein measured from the vertical plane. This measurement is...
• Hair strokeA very thin line or element within a typeface character, particularly noticeable in serifs or connecting...
• Half adderA digital circuit that performs binary addition on two single-bit binary numbers, producing a sum and a carry...
• Half shaftA component of a vehicle's drivetrain that transmits power from the differential or transaxle to the drive...
• Half-batA brick cut lengthwise into two equal halves, typically used in masonry construction to achieve specific bond...
• Half-marrowA specific type of chisel used in woodworking, characterized by a blade that is ground with a bevel on only...
• Half-mastA condition in knitting where a needle fails to rise to its full height, causing it to miss taking a new yarn...
• Half-silvered mirrorAn optical component, also known as a beam splitter, that is coated with a thin, partially reflective layer...
• Half-standardA tree or shrub trained to have a clear stem of approximately 0.8 to 1.2 meters (3 to 4 feet) before...
• HalftoneA printing method that creates the illusion of continuous tone imagery by varying the size and spacing of...
• HallA class of 4-6-0 steam locomotives designed by Charles Collett for the Great Western Railway in the United...
• HALOAn abbreviation for High Altitude Low Opening, a parachuting technique used in military special operations...
• Halo headlightA type of automotive headlight design featuring a circular or semi-circular ring of light-emitting diodes...
• HaltA small, unstaffed railway station or stopping point with minimal facilities, such as a simple platform and...
• HalyardA rope or cable used to hoist or lower a flag, sail, or other object on a mast or pole. This line runs...
• Hammer blowA dynamic force exerted by the rotating wheels of a steam locomotive onto the track, caused by the unbalanced...
• Hamming codeA type of linear error-correcting code that can detect and correct single-bit errors in a block of data. It...
• HamperTo impede or obstruct the movement or operation of a vessel or its equipment. This can involve external...
• HandblockedDescribing a fabric or textile item that has been decorated using the traditional method of hand block...
• HandblownDescribing a traditional glassmaking technique where a skilled artisan shapes molten glass by inflating it...
• HandbrakeA secondary braking system in a vehicle, independent of the main hydraulic or air brakes, primarily used to...
• Handbrake turnA driving maneuver where the handbrake is engaged to lock the rear wheels, causing the vehicle to pivot...
• HandleThe part of a tool, implement, or component designed to be gripped by the hand to facilitate its use or...
• Handling timeThe total time required to load or unload a specific quantity of cargo from a vessel while it is at berth in...
• Hand-offThe process of transferring control of an aircraft from one air traffic control sector or facility to another...
• HandpressA printing press operated manually, typically by pulling a lever or turning a screw, to apply pressure to a...
• HandsomelyAn adverb used in nautical commands directing an action to be performed in a careful, steady, and controlled...
• Hand-tabA small, manually formed projection or flap on a piece of sheet metal, often created by bending or cutting...
• HandwheelA circular interface used for the manual operation of valves, machine tools, and other equipment. It provides...
• Hanging sideThe rock mass located on the upper side of an inclined ore body, fault, or vein. It is the block of rock that...
• Hanging wallThe mass of rock that lies immediately above an inclined fault, vein, or ore body. This geological feature is...
• HardAn instruction given to the helmsman to turn the rudder to its maximum possible angle in the indicated...
• Hard driveA non-volatile data storage mechanism that reads and writes digital information to rapidly spinning magnetic...
• Hard errorA persistent and reproducible fault in a computer system or electronic device that indicates a permanent...
• Hard startA condition in an internal combustion engine where the engine cranks slowly or requires an extended period of...
• HardfaceTo apply a wear-resistant material to the surface of a component, extending its service life in abrasive or...
• HardgroundA cemented seafloor surface that forms when calcium carbonate precipitates within the pore spaces of existing...
• HardheadA brittle, iron-rich intermediate product formed during the smelting of tin ores. This metallic mass consists...
• HardlineA type of coaxial cable characterized by a solid metal outer conductor, typically copper or aluminum, rather...
• Hard-resetTo restart an electronic device by completely cutting and then restoring its power supply, rather than...
• HardrockA general classification for mining operations that extract valuable minerals from solid, consolidated rock...
• Hardware description languageA specialized computer language used to model the structure, behavior, and design of electronic circuits...
• Hardware nodeA physical computing device within a network or distributed system that performs specific functions or hosts...
• Hard-wireTo connect electronic components or circuits using physical wires and solder, creating a permanent, fixed...
• HardwiredDescribing an electronic circuit or system where connections are made physically with wires, traces on a...
• HardwoodWood derived from deciduous trees, which are angiosperms that lose their leaves seasonally. These woods are...
• HarnessA system of straps and buckles designed to secure a person or object, often for safety, support, or control...
• Harpoon forkA long-handled agricultural tool with two or three strong, pointed tines, designed for pitching hay or straw...
• HarrA doorpost or the vertical frame member on either side of a door opening. It provides support for the door...
• HarvestTo gather mature crops from the field or plants when they are ready for consumption, storage, or processing...
• HarvesterA multi-functional forestry machine that performs several operations on a tree, including felling, delimbing...
• HarvestingThe systematic process of collecting mature crops from agricultural fields. This operation can be performed...
• HarveyizeTo apply a surface-hardening process to steel, particularly armor plate, by carburizing one side and then...
• Hash noiseA type of broadband electrical noise characterized by its harsh, raspy sound when demodulated, originating...
• HatA component in metal forming, specifically a channel section with a U-shaped profile and two outward-facing...
• HatchAn opening or access point, typically covered by a lid or door, leading into a confined space such as a...
• HatchworkThe system of covers and supporting structures that close off the openings in a ship's deck, known as...
• Haul roadA temporary or permanent roadway constructed within a mine site for the movement of heavy equipment and...
• Haul truckA large, heavy-duty vehicle designed to transport massive quantities of ore, waste rock, or other bulk...
• HaulbackA method of logging where felled trees or logs are pulled uphill or away from a landing using a cable system...
• HaulierA person or company specializing in the transportation of goods, materials, or equipment, particularly in the...
• HaylageA type of forage made from grass or legumes that is cut, wilted to a moisture content of 40-60%, and then...
• HaymakerA piece of agricultural equipment or a person involved in the process of making hay. The equipment typically...
• HazeA cloudy or milky appearance in a transparent material, such as plastic film or glass, caused by light...
• HBMHigh Bandwidth Memory: A type of high-performance RAM interface for 3D-stacked synchronous dynamic...
• HBTAn abbreviation for Herringbone Twill, a type of woven fabric characterized by a distinctive V-shaped or...
• HCLA specialized lamp used as a spectral line source in atomic absorption and atomic fluorescence spectroscopy...
• HCLKThe high-speed clock signal that synchronizes operations within a computer system, particularly in relation...
• HCVHeavy Commercial Vehicle: A classification for large motor vehicles designed for transporting heavy loads or...
• HD DVD driveAn optical disc drive designed to read and write data to HD DVD (High-Definition Digital Versatile Disc)...
• HDAAn abbreviation for High Density Alumina, a synthetic ceramic material with high purity, fine grain size, and...
• HDLAn abbreviation for Hardware Description Language, a specialized computer language used to describe the...
• HDRHigh Dynamic Range, a technology that expands the contrast ratio and color accuracy of displays and images...
• HDSLHigh-bit-rate Digital Subscriber Line, an early form of DSL technology that provides high-speed data...
• HeadA component of a machine tool that holds and rotates the cutting tool or workpiece, or provides a specific...
• Head gasketA seal positioned between the engine block and the cylinder head in an internal combustion engine. It...
• Head unitThe central control component of a vehicle's infotainment system, located in the dashboard. It integrates...
• HeadbandA decorative and functional strip of material, often colored silk or cotton, attached to the top and...
• HeadboardA decorative board or sign affixed to the front of a locomotive, typically on the smokebox door of a steam...
• HeadchairA cast iron or steel component used in bullhead rail track construction, positioned at the end of a sleeper...
• HeadcodeA system of lights or alphanumeric indicators displayed on the front of a train, providing information about...
• HeaderA structural beam installed horizontally above an opening in a wall, such as a window or door, to support the...
• HeadframeA large structural frame erected above a mine shaft, supporting the hoisting machinery that raises and lowers...
• HeadingAn underground excavation driven horizontally or at a slight incline into a rock mass, serving as a primary...
• HeadlineA prominent title or heading at the top of a newspaper article, magazine feature, or advertisement, designed...
• HeadlinerThe fabric-covered composite panel that forms the interior ceiling of a vehicle's passenger compartment. It...
• Head-onDescribing a collision where the front ends of two vehicles directly impact each other. This type of accident...
• Head-on collisionA traffic accident where the front ends of two vehicles traveling in opposite directions strike each other...
• HeadpieceA decorative illustration or ornamental design placed at the beginning of a chapter or section in a book...
• HeadroomThe available dynamic range between the typical operating level of an audio or electrical signal and the...
• HeadsmanA mine worker responsible for supervising the loading and unloading of cages or skips at the top of a mine...
• HeadstickA piece of furniture, typically wood or metal, placed at the top of a locked-up printing form in a chase. It...
• HeapsteadThe surface area immediately surrounding a mine shaft, where ore is brought to the surface, sorted, and...
• HeartThe central portion of a tree trunk, comprising the pith and the innermost growth rings. This part of the...
• Heart bondA specific pattern of brickwork or masonry where the inner courses of a thick wall are laid with bricks...
• HeartbondA specific pattern of brickwork or masonry where the inner courses of a thick wall are laid with bricks...
• HeartingThe inner core of a masonry wall, typically composed of rubble or lower-quality infill material. This...
• Heat shieldA protective barrier designed to dissipate or reflect thermal energy away from a spacecraft or its components...
• HeatherA yarn or fabric created by blending fibers of different colors, typically two or more, before spinning or...
• HeatheredDescribing a fabric or yarn that exhibits a mottled or speckled appearance due to the blending of fibers of...
• Heating elementA component that converts electrical energy into heat through the principle of resistive heating. It is...
• HeatshieldA protective barrier designed to dissipate or reflect thermal energy away from a spacecraft or its components...
• HeaveThe upward movement or displacement of rock or ground, often caused by tectonic forces, frost action, or the...
• HeavyAn aircraft category designation used in air traffic control to identify an aircraft with a maximum takeoff...
• Heavy equipmentLarge, self-propelled machinery designed for construction, earthmoving, and material handling tasks that are...
• Heavy machineryLarge, self-propelled vehicles and equipment designed for construction, earthmoving, mining, and other...
• Heavy railA class of high-capacity, electric-powered urban railway, characterized by its separation from other traffic...
• Heavy vehicleA motor vehicle designed for carrying substantial loads or a large number of passengers, exceeding certain...
• HeckleTo separate and straighten bast fibers, such as flax or hemp, using a tool with sharp, pointed teeth. This...
• HectoampA unit of electric current, equivalent to 100 amperes. This measure is used in electrical engineering to...
• HectogramA unit of mass in the International System of Units (SI), equivalent to one hundred (10^2) grams. This...
• HectokatalA unit of catalytic activity in the International System of Units (SI), representing 100 katals. This measure...
• HectometreA unit of length in the metric system, equivalent to 100 metres. This measure is commonly used in surveying...
• HectopascalA unit of pressure equal to 100 pascals, commonly used in meteorology for reporting atmospheric pressure. The...
• HeelThe bottom end of a vertical or angled framing member, such as a rafter or stud, where it rests on a...
• Heel-and-toeA driving technique where the driver simultaneously operates the brake and accelerator pedals with one foot...
• HeelpostThe main vertical post at the pivot end of a gate or door, providing the primary support and bearing the...
• HeftTo lift or carry something heavy, often with considerable effort, indicating the weight or bulk of an object...
• Height to paperThe standard height of printing elements, such as metal type, wood type, and printing plates, required to...
• HeirloomA variety of plant, typically a vegetable, fruit, or flower, that has been passed down through generations of...
• Helicopter earA condition experienced by individuals working in environments with prolonged exposure to high-frequency...
• HelioelectricityThe generation of electricity directly from sunlight, primarily through the use of photovoltaic cells or...
• HellboxA receptacle, typically a wooden box, into which compositors would throw discarded or broken pieces of metal...
• HelmetA protective head covering, typically made from rigid materials such as plastic, fiberglass, or metal...
• HelperAn additional locomotive attached to a train to provide extra power, particularly on steep grades or for...
• Helper gradeA section of railway track with a steep incline that necessitates the use of additional locomotives to assist...
• Helper-upA locomotive, also known as a pusher engine or banker, temporarily added to the rear of a heavy train to...
• Helping handA tool consisting of a weighted base with multiple adjustable clips or clamps, often mounted on flexible...
• HelplineA telephone service providing assistance, information, or support to users of a product or service, or to...
• HemA finished edge on a piece of fabric, created by folding and sewing the raw edge to prevent fraying and...
• HemiAn internal combustion engine design that features hemispherical combustion chambers in the cylinder heads...
• HenleyA collarless pullover shirt characterized by a placket below a round neckline, which fastens with two to five...
• Heritage railwayA railway line preserved and operated for its historical value, often using vintage rolling stock and...
• HerringboneA distinctive V-shaped weaving pattern resembling the skeleton of a herring fish. This twill weave creates a...
• HeterojunctionA junction formed between two dissimilar semiconductor materials with different band gaps. This interface...
• HFHigh frequency, referring to the radio frequency range from 3 to 30 megahertz (MHz). This band is...
• H-fieldThe magnetic field strength or magnetic field intensity, representing one of the two fundamental components...
• HFRAn abbreviation for Hold for Release, an instruction placed on a shipment, indicating it should not be moved...
• HGVA heavy goods vehicle, referring to any truck or lorry designed for transporting substantial loads. These...
• HHGAn abbreviation for Household Goods, a cargo classification for personal effects, furniture, and other...
• HibernationA low-power operational mode for spacecraft or their subsystems, reducing energy consumption and extending...
• HickeyA printing defect appearing as a small, unwanted spot or donut-shaped mark on the printed sheet. This blemish...
• HIDAn abbreviation for High-Intensity Discharge, referring to a type of automotive headlamp that produces light...
• HIFAn abbreviation for Handling In Fee, a charge levied by a port, terminal, or warehouse for the service of...
• High shelfA type of equalizer filter that boosts or cuts all frequencies above a specified cutoff frequency by a...
• High speed steelA type of tool steel known for its ability to retain hardness and strength at high temperatures, making it...
• HighballA hand signal used in rail operations, traditionally made by a raised arm, indicating that a train is cleared...
• High-entropy alloyAn alloy composed of five or more principal elements in near-equiatomic proportions, leading to a high...
• Higher-speed railA category of intercity passenger rail service operating at speeds faster than conventional trains but below...
• High-level synthesisAn automated design process in electronic design automation (EDA) that translates an algorithmic description...
• High-occupancy vehicle laneA designated traffic lane reserved for vehicles carrying a specified minimum number of occupants, typically...
• High-octaneDescribing gasoline with a high octane rating, indicating its resistance to knocking or pre-ignition in an...
• HighpassDescribing a filter that allows frequencies above a certain cutoff frequency to pass through while...
• High-poweredDescribing an optical system or device designed to deliver or withstand a large amount of optical power. This...
• High-speed railA railway system designed for passenger transport at speeds substantially higher than conventional rail...
• High-timeDescribing an aircraft component or engine that has accumulated a large number of operating hours or cycles...
• High-visibilityDescribing clothing or materials designed to make the wearer easily seen in low light conditions or against...
• Hill startA vehicle control system that automatically holds the brakes for a few seconds after the brake pedal is...
• HillingThe practice of mounding soil around the base of plants as they grow. This technique provides support for the...
• HiplineThe horizontal circumference on a garment pattern or finished piece of clothing that corresponds to the...
• HitchA recess or notch cut into the side of a mine shaft or tunnel to support timber, steel sets, or other...
• HMCAn abbreviation for Horizontal Machining Center, a type of computer numerical control (CNC) machine tool...
• HoardingA temporary fence or barrier erected around a construction site to prevent unauthorized access and protect...
• HogTo remove a large amount of material from a workpiece quickly, usually in the initial stages of machining...
• HoggingThe machining process of removing a substantial volume of material from a workpiece in a single pass or a...
• HoistmanAn operator responsible for controlling the hoisting equipment that moves personnel, materials, and ore in a...
• HoistroomA dedicated building or chamber housing the mechanical and electrical equipment for a mine hoist system. It...
• Holbein stitchA double running stitch used in embroidery to create a solid line that appears identical on both sides of the...
• HoldA large, enclosed space below the main deck of a ship used for stowing cargo. On a bulk carrier or general...
• Hold timeThe minimum duration that a data signal must remain stable at the input of a sequential logic device, such as...
• Holder-upA metalworker who supports a rivet from one side while it is being hammered from the other. This person uses...
• Holding patternA predetermined flight path, usually oval, that an aircraft follows while awaiting further clearance from air...
• HolingThe action of creating an opening between two separate underground mine workings, such as connecting a tunnel...
• HolophotalRelating to an optical system designed to collect and project nearly all emitted light from a source into a...
• HomeThe final, correct, or fully engaged position for a piece of equipment or a component. An object is...
• Home computerA personal computer designed for use by individuals in a domestic setting, rather than for business or...
• Home runA single electrical circuit that extends directly from a distribution panel or circuit breaker box to a...
• Home signalA fixed railway signal that controls the entry of a train into a block section, station, or junction. This...
• HomebuildAn aircraft constructed by an individual or a group for personal use, rather than by a certified...
• Honey plantA plant species valued by beekeepers for its abundant nectar and pollen, which honey bees collect to produce...
• HoneycombA lightweight structural core material, typically made from aluminum, aramid paper, or fiberglass, formed...
• Honeycomb coilAn inductor wound in a crisscross or lattice pattern to reduce its self-capacitance and improve its quality...
• Honeycomb quiltA woven or knitted fabric characterized by a textured, cellular pattern that resembles the hexagonal cells of...
• Honeycomb radiatorA type of radiator core design characterized by a dense arrangement of small, hexagonal or square cells. This...
• Honeycomb sandwichA composite material structure consisting of two thin, stiff face sheets bonded to a lightweight, thick core...
• Honeycomb stitchA knitting or crochet stitch pattern that creates a textured fabric with a raised, cellular appearance...
• Hong Kong finishA method of finishing raw seam allowances in garment construction by binding each edge with a narrow strip of...
• Honorary steam locomotiveA diesel locomotive that produces an excessive amount of dark exhaust smoke, giving it the appearance of a...
• HoodThe hinged cover over the engine compartment of a motor vehicle, known as a bonnet in British English. It...
• HookA curved or angled implement, made of metal, used for grasping, pulling, or suspending objects. In...
• Hook flashA brief, momentary disconnection of the telephone line, simulating a quick hang-up and immediate pick-up...
• Hook pinA type of fastener consisting of a metal pin with an integrated hook or bent shape at one end, designed to...
• Hop gardenA cultivated area specifically dedicated to growing hops, a key ingredient in brewing beer. These gardens...
• HopbackA vessel used in brewing to infuse beer with hop aroma and flavor after the wort has been boiled and cooled...
• Hopper carA type of railroad freight car designed to transport bulk commodities such as grain, coal, ore, or gravel. It...
• Hopper wagonA type of railway freight car designed for carrying bulk commodities like coal, grain, or ore, featuring one...
• HopyardAn agricultural field or area where hop plants are grown commercially. This cultivation requires a specific...
• Horizontal machining centerA computer numerical control (CNC) machine tool characterized by a horizontally oriented spindle that holds...
• HornThe extension of a door or window frame's vertical stile beyond the horizontal head or sill joints. These...
• HorseA mass of barren rock or waste material found within a mineral vein or orebody, interrupting the continuity...
• HorseboxA type of railway wagon specifically designed for the transport of horses. These enclosed vehicles featured...
• Horsepower-hourA unit of energy representing the work done by one horsepower operating for a period of one hour. It is used...
• Hose bridgeA ramp-like structure placed over fire hoses or other cables laid across a roadway, allowing vehicles to...
• Hose jacketThe outer woven fabric layer of a fire hose that provides reinforcement and protects the inner waterproof...
• HosepackA pre-connected and folded arrangement of fire hose, designed for rapid deployment by firefighters. This...
• HOTAn abbreviation for High-Occupancy Toll, referring to a type of traffic lane that allows single-occupant...
• Hot bedA garden bed that is artificially heated, typically by a layer of decomposing organic matter such as manure...
• Hot chassisA design in older electronic equipment, particularly AC/DC radios, where one side of the AC power line is...
• Hot endThe section of a glass manufacturing facility where raw materials are melted and glass is formed into its...
• Hot hatchA high-performance version of a standard hatchback automobile, characterized by a powerful engine...
• Hot metalA traditional method of typesetting where individual characters or entire lines of type are cast in molten...
• Hot microphoneA microphone that is actively powered on and transmitting audio, even if it is not currently being spoken...
• Hot patchA repair method for asphalt pavement that involves heating the existing damaged area and applying new hot...
• Hot rollTo process metal by passing it through rollers at temperatures above its recrystallization temperature. This...
• Hot rollingA metal forming process where metal is heated above its recrystallization temperature and then passed between...
• Hot shiftA method of engaging a power take-off (PTO) unit on a vehicle's transmission while the engine is running and...
• Hot shortDescribing a metal that becomes brittle and loses its ductility at elevated temperatures, making it...
• Hot spotA localized area on equipment or within a structure that has a significantly higher temperature than its...
• Hot stampA forming process where a metal sheet is heated to a high temperature before being pressed into a die to...
• Hot tearA crack that forms in a casting while the metal is still at an elevated temperature, typically during...
• Hot topAn insulating or exothermic lining placed at the top of an ingot mold to maintain the molten state of the...
• Hot zoneThe area immediately surrounding a hazardous materials incident or other dangerous situation where the...
• HotboxAn overheated journal bearing on a railway axle, caused by friction and insufficient lubrication. This...
• Hotel loadThe electrical power required to operate all auxiliary systems and services on a vessel, aircraft, or train...
• HoundA shoulder or projection on a mast that provides support for the trestletrees and the top, which are...
• Hourly ratingA measure of the continuous power output a traction motor can sustain for one hour without exceeding its...
• HouseThe superstructure of a vessel located above the main or weather deck, which contains the bridge...
• HOVA designation for a High-Occupancy Vehicle, which is a passenger vehicle carrying a specified minimum number...
• HovercraftA vehicle capable of traveling over land, water, mud, or ice by creating a cushion of air beneath its hull...
• H-pieceA pipe or duct fitting shaped like the letter H, consisting of two parallel tubes connected by a...
• HPPA mechanically driven high-pressure pump that supplies fuel to the injectors in a gasoline direct injection...
• HRTA type of industrial boiler characterized by a horizontal cylindrical shell containing water, with fire tubes...
• HS3A NASA project that used two Global Hawk unmanned aircraft systems to investigate the processes that underlie...
• HSCSDHigh-Speed Circuit-Switched Data, a technology that enhances data transfer rates over GSM networks by...
• HSDIA type of high-speed direct injection diesel engine that combines direct fuel injection with design features...
• HSDPAAn enhanced 3G mobile communication protocol designed to increase data transfer speeds for downlink...
• HS-DSCHHigh-Speed Downlink Shared Channel, a transport channel in UMTS (Universal Mobile Telecommunications System)...
• HSPA high-speed pump designed to operate at rotational speeds significantly greater than standard pumps, often...
• HS-PDSCHHigh-Speed Physical Downlink Shared Channel: A transport channel in Universal Mobile Telecommunications...
• HS-SCCHA set of one or more physical channels in 3G UMTS cellular networks, known as the High-Speed Shared Control...
• HSTA system that transmits power from a source, such as an engine, to a driven component using pressurized...
• HSUPAHigh-Speed Uplink Packet Access: A 3G mobile telephony protocol that provides improved data transfer speeds...
• HSYNCA timing signal in analog video systems that marks the end of one horizontal line of pixels and the beginning...
• HtrAn abbreviation for heater, a device that converts energy into thermal energy to raise the temperature of a...
• HubA permanent marker set in the ground to establish a survey point. It consists of a wooden stake, metal pipe...
• Hub-and-spokeA distribution model where goods or passengers are routed through a central facility, known as the hub...
• HubbleA space telescope launched by NASA in 1990, designed to observe the universe in visible, ultraviolet, and...
• HudgeA large bucket or iron tub used for hoisting coal, ore, or water out of a mine shaft. The hudge was attached...
• HudsonA type of steam locomotive with a 4-6-4 wheel arrangement, characterized by a four-wheel leading truck, six...
• HügelkulturA gardening and landscaping technique that involves building raised garden beds from decaying wood debris and...
• Hug-me-tightA type of short, close-fitting knitted or crocheted jacket or sweater, similar to a bolero or shrug. It is...
• Human interface deviceA type of computer peripheral that allows humans to interact with a computer system. These devices translate...
• HumpAn artificial mound or incline in a railway classification yard, over which freight cars are pushed and then...
• Hump slugA specialized locomotive unit without a prime mover, designed to provide additional tractive effort in a hump...
• Hump yardA type of railway classification yard where freight cars are sorted into new trains using a small hill, or...
• HuntingAn undesirable oscillation of a system around its equilibrium point, often observed in control systems or...
• Hunting cogAn additional tooth added to one of a pair of meshing gears to prevent the same teeth from repeatedly...
• HurryA self-acting or gravity-operated inclined plane used for lowering coal or ore from a higher level to a lower...
• HushA historical mining technique that uses a sudden, powerful torrent of water to scour away surface soil and...
• HushingAn ancient mining technique involving the controlled release of a large volume of water to erode overburden...
• HutchA compartment in a mineral jig or similar gravity separation device where the densest, highest-grade mineral...
• HVTLThe infrastructure used for the bulk transmission of electrical energy from power generation plants to...
• HybridA system, device, or vehicle that combines two or more different technologies or power sources to perform a...
• HybridizationThe practice in logistics of combining two or more different transportation modes or operational models to...
• HydrationThe chemical reaction between cementitious materials and water, forming a hardened paste that binds...
• Hydraulic radiusThe ratio of the cross-sectional area of a fluid's flow to the wetted perimeter of the channel or pipe. This...
• HydricDescribing soil conditions characterized by saturation, flooding, or ponding for sufficient duration during...
• HydridingThe absorption of hydrogen by a metal, leading to the formation of metal hydrides within its lattice...
• HydroloxA rocket propellant combination consisting of liquid hydrogen (LH2) as fuel and liquid oxygen (LOX) as the...
• HydromesicRelating to a habitat or site characterized by soils that are moist to wet throughout the growing season but...
• HydroplaningA phenomenon where a layer of water builds up between a vehicle's tires and the road surface, causing the...
• HydroponicDescribing a method of growing plants without soil, where roots are submerged in nutrient-rich water...
• Hydrostatic lockA condition in an internal combustion engine where an incompressible fluid, such as water or coolant, enters...
• Hydrostatic pressure relief systemA system of valves and drainage paths designed to prevent structural damage to a vessel or underground...
• HypercyclopeanRelating to a form of three-dimensional perception that integrates information from multiple viewpoints over...
• HypergolicDescribing a rocket propellant combination where the fuel and oxidizer components ignite spontaneously upon...
• HyperlensA type of superlens that uses metamaterials to overcome the diffraction limit of conventional optics...
• HypersonicRelating to flight speeds of Mach 5 or greater, which is five times the speed of sound. At these velocities...

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