Industrial and trades terminology · MLC-0113

Industrial and trades terms: U (116)

• UARTA Universal Asynchronous Receiver/Transmitter, a hardware device that translates data between parallel and...
• UBCThe Uniform Building Code, a widely adopted model building code in the United States, particularly in the...
• U-boatA low, flat-topped, wheeled cart with a U-shaped frame and tall vertical handles at each end, used for...
• UCAn abbreviation for Unified Communications, a framework that integrates real-time enterprise communication...
• UCAVAn Unmanned Combat Aerial Vehicle, which is an aircraft without a human pilot on board, capable of carrying...
• UDSUnified Diagnostic Services: A standardized communication protocol used in automotive electronics for...
• UEUser Equipment, a term in telecommunications referring to any device used by an end-user to communicate over...
• UFDAn instrument that uses high-frequency sound waves to detect and locate internal discontinuities such as...
• UHFThe designation for the Ultra High Frequency band of radio waves, spanning from 300 megahertz to 3 gigahertz...
• UHVAn abbreviation for ultra-high vacuum, a pressure regime characterized by extremely low gas density. This...
• ULAA joint venture, the United Launch Alliance, formed by Lockheed Martin and Boeing to provide spacecraft...
• ULCVAn automobile classification, Ultra Low-Cost Vehicle, for cars designed with minimal features and...
• ULEZAn area in a city where vehicles must meet specific emission standards or their drivers must pay a daily...
• ULFThe designation for radio frequencies in the range from 300 hertz to 3 kilohertz, corresponding to...
• ULSIA classification of integrated circuit technology that involves integrating more than one million transistors...
• UlsterA long, loose-fitting overcoat, traditionally made of heavy tweed or frieze fabric, characterized by a cape...
• Ultra high frequencyThe portion of the electromagnetic spectrum designated by the International Telecommunication Union for radio...
• Ultra large scale integrationA classification of integrated circuits that contain millions or billions of transistors on a single chip...
• Ultra low frequencyThe band of electromagnetic radiation with frequencies in the range of 300 hertz to 3 kilohertz...
• UltrapotassicDescribing an igneous rock with a high concentration of potassium, specifically where the molar ratio of...
• Ultrasonic bathA cleaning device that uses high-frequency sound waves to agitate a liquid, creating cavitation bubbles that...
• UmbilicalA flexible cable or hose assembly that provides power, data, fluids, or gases from a ground support system to...
• Umbilical cordA set of cables, hoses, and connectors that links a launch vehicle or spacecraft to ground support equipment...
• UmbilicusA bundled set of cables, hoses, and electrical lines that connects a launch vehicle, spacecraft, or aircraft...
• UMTSA third-generation (3G) mobile cellular system, Universal Mobile Telecommunications System, developed as part...
• UnableA standard phrase used in aviation radio communications to indicate that a pilot or air traffic controller...
• UnballastedDescribing a vessel that is not carrying any ballast, either water, sand, or other heavy material, to improve...
• UnbasteTo remove temporary basting stitches from a garment or fabric assembly after permanent stitching has been...
• UnbastedDescribing a garment or textile component that has not undergone the temporary stitching process known as...
• UnberthTo move a spacecraft away from a passive docking port or fixture on a space station or another vehicle...
• UnbuttressedDescribing a tree trunk that lacks the characteristic flaring or widening at its base, known as buttresses...
• Uncanny valleyA hypothesis in robotics and aesthetics describing the phenomenon where human replicas that appear almost...
• UncappingThe process of removing the wax cappings from honeycombs to allow the honey to be extracted. This is...
• UnclockedDescribing a digital circuit or system that operates without a synchronized clock signal to coordinate its...
• Under glassDescribing the cultivation of plants within a protective structure made of glass or a similar transparent...
• Under squareDescribing an internal combustion engine design where the cylinder bore diameter is smaller than the piston's...
• UnderactuateTo design a mechanical system with fewer independent control inputs than its degrees of freedom. This...
• UnderbackA vessel in a brewery that collects wort from the mash or lauter tun before it is transferred to the brew...
• UnderboardA layer of boarding installed beneath the primary flooring material, typically made of plywood or oriented...
• UnderburdenedA condition in blasting operations where the rock mass in front of a drill hole is insufficient to contain...
• UnderbustA garment style that fits around the torso, starting just below the breasts and extending downwards towards...
• UndercastA passage or tunnel constructed beneath another roadway or airway in a mine, primarily to direct airflow for...
• UndercloakA strip of mortar or a fiber cement board laid along the eaves or verges of a roof, beneath the first course...
• UndercollarThe hidden or inner layer of a garment's collar, which provides structure and support to the visible upper...
• UndercutterA specialized mining machine designed to cut a horizontal slot at the base of a coal seam or ore body. This...
• UnderdraughtA current of air supplied from below the fuel bed in a furnace, forge, or boiler. This forced or natural flow...
• UnderfireTo subject ceramic ware to a firing temperature that is too low or for a duration that is too short for the...
• UnderfiredDescribing a ceramic piece that has not been subjected to sufficient heat or duration during the firing...
• UnderfiringThe process of firing ceramic materials at a temperature or for a duration that is below the optimal range...
• UnderhandRelating to a mining method where excavation proceeds downward from a main level or drift. In underhand...
• UnderholeA bore hole drilled downwards from an underground working, typically for exploration, drainage, or to connect...
• UnderkillThe failure to apply a sufficient amount of processing, such as heat, radiation, or chemical exposure, to...
• UnderlayA material, such as paper or cardboard, placed beneath a printing plate or block to raise its height. This...
• UnderlayerA stratum of rock or other geological material situated directly beneath a mineral deposit or a specific...
• UnderlookerA supervisor in a coal mine, subordinate to the manager, who is responsible for the daily oversight of...
• UnderprintA faint image, pattern, or text printed on a substrate before the main printing pass adds the primary content...
• UnderrideA type of collision where a smaller or lower vehicle slides underneath a larger or higher vehicle, such as a...
• UndershiftTo engage a lower gear than appropriate for the current speed or load in a transmission system. This action...
• UnderslipA layer of liquid clay, or slip, applied to a ceramic piece before the main glaze application. It serves as a...
• UnderspunDescribing yarn that has been twisted with fewer turns per inch than is typical for its fiber type and...
• UndertileRelating to materials or systems installed beneath ceramic tiles or other floor coverings, typically for...
• UnderviewerA senior supervisory role in a mine, typically responsible for a larger area or multiple sections of the...
• UnderwrapA layer of material placed directly on a roller or cylinder before the main outer covering is applied. It...
• UndockTo separate a spacecraft from a docking port on another vehicle or space station using its own propulsion...
• UnenteredRelating to imported goods that have physically arrived at a port of entry but have not yet been formally...
• UnfittedDescribing a railway wagon or train that is not equipped with continuous braking systems, relying instead on...
• UngreenDescribing lumber or timber that has been seasoned or dried to reduce its moisture content below the fiber...
• UngroundDescribing an electrical circuit or system that lacks a direct, intentional connection to an earth ground...
• UngroundedDescribing an electrical system or component that lacks a direct conductive path to the earth or a common...
• UnholdTo resume an active call that was previously placed on hold, allowing the parties to continue their...
• UnibodyA vehicle construction method where the body and chassis are integrated into a single, structural unit...
• UnijunctionA type of semiconductor device with only one junction, primarily used as a switch in oscillator circuits...
• Uninterruptible power supplyA device that provides continuous electrical power to connected equipment when the primary power source...
• Union bugA small, standardized emblem or logo printed on materials to indicate that the work was produced by members...
• Union stationA railway station shared by two or more independent railway companies, allowing passengers and freight to...
• UNISIGA consortium of European railway signaling companies that developed the technical specifications for the...
• UnitA standard, defined quantity of a physical property used as a basis for measurement and comparison. Units...
• Universal logic gateA logic gate that, through combination with itself, is able to implement any Boolean function without needing...
• UnleadTo remove the thin strips of lead (called leads) that are placed between lines of type to increase line...
• UnlockA state in a phase-locked loop (PLL) circuit where the output signal's phase is no longer synchronized with...
• UnlockedDescribing a device or system that has had its security restrictions removed, allowing full access or...
• UnlooperA device in a continuous strip processing line, such as in a steel or paper mill, that accumulates or...
• UnnobleDescribing a metal that is highly reactive and readily corrodes or oxidizes when exposed to its environment...
• UnpickTo carefully remove stitches from a seam or embroidered area, either by hand or with a specialized tool. This...
• UnportTo close an opening or port in a mechanical device, such as a valve or a cylinder in a two-stroke engine. The...
• UnroadworthyDescribing a vehicle that is not in a safe or legally compliant condition to be operated on public roads. A...
• UnslippedDescribing a ceramic piece that has not had a layer of slip applied to its surface. The natural clay body...
• UnsmeltedDescribing an ore or metallic compound that has not yet undergone the smelting process to extract the pure...
• UnsurfacedDescribing a road, track, or area that lacks a paved or treated top layer, consisting instead of natural...
• UntemperTo reverse the effects of tempering in a hardened metal, such as steel, by heating it to a specific...
• UntoppingThe process of removing the overburden or waste material that lies above a mineral deposit or coal seam...
• UntravellableDescribing a route, road, or area that cannot be traversed by vehicles or pedestrians due to physical...
• UpcastA mine ventilation shaft through which contaminated air is expelled from the underground workings to the...
• UpconversionThe process of converting a signal from a lower frequency to a higher frequency. This technique is used in...
• UpliftThe total amount of fuel loaded onto an aircraft for a specific flight. This quantity is calculated based on...
• UplinkThe communication path from a ground-based transmitter to a satellite or from a mobile device to a base...
• UplockA mechanical latching device within a retractable landing gear system that holds the gear in the fully...
• UpmakerA skilled craftsperson in the printing industry responsible for preparing and assembling printing plates or...
• UpmakingThe process of arranging multiple pages onto a single large press sheet in a specific order and orientation...
• UpmassThe total mass of a payload, including the spacecraft, its propellants, and all cargo, that is launched from...
• Up-overA method of conveying material in a mine, particularly in steeply inclined shafts or raises, where skips or...
• Upper garmentAn article of clothing worn on the torso or upper part of the body, distinct from garments worn on the lower...
• UPSUninterruptible Power Supply: An electrical apparatus that provides emergency power to a load when the input...
• UpsetTo increase the cross-sectional area of a metal workpiece by shortening its length through compressive force...
• UpsetterA specialized forging machine designed to perform upsetting operations on metal bars or rods. It uses a die...
• UpstandA vertical section of material, such as a pipe or a splashback, that rises from a horizontal surface. In...
• URLAn acronym for Uniform Rate of Loading or Unloading, a contractual term in a charter party specifying a...
• USARTA microelectronic circuit, the Universal Synchronous/Asynchronous Receiver/Transmitter, that converts...
• USBA Universal Serial Bus interface used in modern aircraft for data transfer between portable devices and the...
• USB keyA portable data storage device that connects to a computer or other compatible device via a Universal Serial...
• USDOTThe United States Department of Transportation, a federal cabinet department governing national...
• USMCAThe United States-Mexico-Canada Agreement, a free trade agreement that governs commerce among these three...
• USOSThe United States Orbital Segment, which comprises the modules, laboratories, and external truss structures...
• UTCThe primary time standard by which the world regulates clocks and time, serving as the basis for civil time...
• UteA utility vehicle, originating from Australia and New Zealand, that combines a two-door passenger cabin with...
• UTPUnshielded Twisted Pair: A type of copper cable used in telecommunications, consisting of pairs of wires...

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