Industrial and trades terminology · MLC-0113

Industrial and trades terms: O (151)

• OatlageA type of silage made from the entire oat plant, harvested at the soft dough stage before the grain is fully...
• OBCOn-Board Courier: A service where a dedicated courier personally accompanies a time-sensitive package or...
• OBDOn-Board Diagnostics, a standardized system in vehicles that monitors the performance of engine components...
• OberhefeA type of yeast, specifically a top-fermenting strain, used in brewing to produce ales, stouts, and wheat...
• Observation carA passenger coach designed with large windows or an open platform at one end to provide expansive views of...
• OccupyTo set up a surveying instrument, such as a total station or theodolite, directly over a known point on the...
• OCRA one coat render, a pre-blended cement-based exterior plaster applied to masonry walls in a single layer, in...
• Octal data rateA signaling method in which eight bits of data are transferred per clock cycle, also known as ODR. This...
• OctavoA book or pamphlet size resulting from folding a full sheet of paper three times, creating eight leaves or...
• OctodeA vacuum tube or thermionic valve with eight electrodes: an anode, a cathode, and six grids. The multiple...
• OctodecimoA book size resulting from folding a printed sheet of paper into eighteen leaves, forming 36 pages. This...
• OddmentA part of a book that is not part of the main text, such as the title page, dedication, preface, contents...
• Odometer fraudThe illegal practice of altering a vehicle's odometer reading to display fewer miles than the vehicle has...
• OdontographAn instrument or drafting template used to draw approximate profiles for gear teeth, typically using circular...
• OFDMA digital modulation method that encodes data on multiple orthogonal carrier frequencies, known as...
• Off timeThe duration within a duty cycle during which a component, circuit, or system is in a non-operating or...
• OffbearTo remove cut or processed material from a machine or workstation, often by hand or with a simple mechanical...
• Off-gasTo release gaseous byproducts or volatile organic compounds (VOCs) from a material, especially during...
• OffsetA short measurement taken perpendicular to a main survey line to locate a feature or boundary that is not...
• Offset timeA specific time delay intentionally introduced into a system to shift the timing of a signal or event...
• OfftakeThe agreement or process by which a buyer commits to purchasing a specified quantity of a commodity, such as...
• Off-the-rackDescribing manufactured goods, particularly clothing, that are produced in standard sizes and designs for...
• OHAn abbreviation for overhaul, the work of disassembling an engine, propeller or other component, cleaning and...
• OHLEOverhead Line Equipment, the system of overhead wires used to supply electricity to electric trains, trams...
• Ohmic resistanceThe opposition to the flow of electric current in a material that obeys Ohm's Law, meaning the resistance...
• Oil changeThe routine maintenance procedure of draining used lubricating oil from an engine and replacing it with fresh...
• Oil filterA device for screening out abrasive particles and sludge from circulating lubricating oil in an internal...
• Oil-canningA visible waviness or buckling in flat or nearly flat sheet metal, seen as ripples that shift with the angle...
• OLAn abbreviation for overload, a condition where a machine, structure, or electrical circuit is subjected to a...
• Old roseA classification of rose varieties that existed before 1867, the year the first Hybrid Tea rose, 'La France'...
• Old woman's toothA specialized hand plane designed for cutting grooves, dadoes, and rebates in wood. It features a cutting...
• Old World ROMA Macintosh firmware design in which a ROM chip on the logic board holds the Macintosh Toolbox, the core...
• Old-growth forestA forest that has attained great age without substantial disturbance, allowing it to exhibit unique...
• OleoA type of shock-absorbing strut used in aircraft landing gear, consisting of a cylinder containing both...
• OllaA traditional unglazed terracotta pot with a narrow neck, buried in the soil and filled with water to provide...
• OmnidirectionalDescribing an antenna or transducer that radiates or receives energy equally well in all directions in one...
• OMSAn integrated computer system, the Onboard Maintenance System, that continuously monitors aircraft systems...
• On the biasDescribing a cut or orientation made at a 45-degree angle to the warp and weft threads of a woven fabric or...
• On the floorDescribing a gear selector or shifter mechanism that is mounted directly on the transmission tunnel or floor...
• OncostmanA mine worker whose wages are paid on a fixed daily or weekly rate, rather than being based on the amount of...
• One engine in steamA method of working a single-track railway line on which only one locomotive, or one set of coupled...
• One-coldA binary encoding scheme where exactly one bit in a set is set to a logical low (0) state, while all other...
• One-hotA binary encoding scheme where exactly one bit in a set is set to a logical high (1) state, while all other...
• One-hour fuelFine, dead vegetative material with a diameter of less than one-quarter inch, such as grasses, leaves, and...
• One-size-fits-allDescribing a garment or accessory designed, through its cut, elasticity, or adjustable features, to fit a...
• One-wayA type of disc plow or harrow that cuts and turns soil in a single direction, typically used for primary...
• One-way ticketA travel document that permits passage from an origin point to a single destination without a return journey...
• Online service providerA company that offers users access to information, entertainment, or other services over the internet. These...
• OnsetterA mine worker responsible for loading and unloading cages or skips at the bottom of a mine shaft...
• OpacityThe measure of how impervious a material is to the transmission of light, indicating its ability to block or...
• OpaliteA milky white opal glass pressed or moulded into tiles, bricks, or panels for facing walls and other...
• Op-ampA high-gain, direct-coupled voltage amplifying device with a differential input and a single-ended output...
• OPCOrdinary Portland Cement, the most common type of cement used globally in construction. It is a hydraulic...
• OPDAn apparatus that interrupts current flow when it exceeds a predetermined value for a specific duration...
• OpenA condition in an electrical circuit where there is a break in the conductive path, preventing the flow of...
• Open assembly timeThe period between spreading adhesive on a surface and bringing the parts together, during which the glue...
• Open differentialA type of differential gear assembly that allows the wheels on the same axle to rotate at different speeds...
• Open timeThe maximum period after applying an adhesive, sealant, or coating during which it remains workable and can...
• Open valleyA roofing valley design where the roofing materials on adjacent slopes are trimmed back from the centerline...
• Open wagonA type of freight car with an open top and fixed sides, used for transporting bulk goods that are not...
• OpenbandA right-handed twist in a yarn, twine, or rope, also called a Z twist, in which the individual fibres slope...
• Opened-toeDescribing footwear, such as shoes or sandals, that features an opening at the front, exposing the wearer's...
• Open-field systemA historical agricultural system prevalent in medieval Europe where farmland was divided into numerous small...
• Operating timeThe duration from the initiation of a command or event to the completion of the intended action by an...
• OperatorThe entity, company, or individual responsible for the day-to-day management and execution of mining or...
• OPOCAn engine design from the company EcoMotors in which each cylinder holds two pistons that move toward and...
• Opposed cylinderAn engine configuration where cylinders are arranged in two banks directly opposite each other, with pistons...
• OPRAFA former UK government body, the Office of Passenger Rail Franchising, responsible for awarding and managing...
• OpticA single component of an optical system, such as a lens, mirror, prism, or filter, that acts on light by...
• Optical axisAn imaginary line passing through the center of curvature of each surface of a lens or mirror system, along...
• Optical discA flat, circular disc that stores digital data in the form of microscopic pits and lands on its surface...
• Optical driveA disk drive that reads and writes data from optical discs through a process involving laser light. The...
• Optical flatA precision-ground and polished piece of glass or fused silica with extremely flat surfaces, used as a...
• Optical switchA device that selectively redirects or switches optical signals from one fiber optic path to another without...
• OptomechanicsThe engineering field concerned with the design and construction of mechanical systems that hold, position...
• OR gateA fundamental digital logic gate that produces a high output (1) if any of its inputs are high (1). If all...
• Orange peelA surface defect in coatings or molded plastics characterized by a texture resembling the skin of an orange...
• OrderA characteristic of a filter or control system that describes the steepness of its frequency response or the...
• Ore carA heavy-duty railroad freight car built to carry iron ore or other dense mineral from a mine to a processing...
• OrefieldA geographical area containing a concentration of mineral deposits that are economically viable for...
• OrganicDescribing a system of agricultural production that sustains the health of soils, ecosystems, and people. It...
• Organic farmingA method of crop and livestock production that involves minimal use of synthetic external inputs, such as...
• OrleansA lustrous, closely woven plain-weave dress fabric with a fine cotton warp and a worsted weft, so it is a...
• OrographA wheeled field instrument that is pushed across the ground and records the distance travelled and the...
• OrthoamphiboliteA metamorphic rock primarily composed of amphibole and plagioclase feldspar, formed from the metamorphism of...
• OrthographicallyDescribing a projection method used in technical drawing where parallel lines from an object are projected...
• OrthomagmaticRelating to the main stage of crystallization in a body of magma, during which the primary rock-forming...
• OrthometricRelating to heights or elevations measured along the plumb line from the geoid to a point on the Earth's...
• OrthostereoscopicDescribing a stereoscopic display or viewing system that accurately reproduces the geometric relationships of...
• OrthostereoscopyThe principle and practice of creating stereoscopic images or displays that accurately replicate the spatial...
• OSTThe Outer Space Treaty of 1967, the founding agreement of international space law, formally the Treaty on...
• OS&YAn abbreviation for Outside Stem and Yoke, a type of gate valve commonly used in fire protection systems. The...
• OTAA method for remotely updating the software, firmware, or configuration of electronic devices through...
• OTPOne-Time Programmable, referring to a type of non-volatile memory that can be programmed only once after...
• OttomanA type of woven fabric characterized by a pronounced horizontal rib or corded effect. This texture is created...
• OutA printing error where a word, line, or section of text is inadvertently omitted from the printed material...
• Out of gaugeDescribing rolling stock or freight that exceeds the standard dimensions for height, width, or length...
• Out of sortsDescribing a condition in letterpress printing where type characters are missing from a fount, making it...
• OutbondA masonry unit, brick or stone, set so that its long dimension runs along the wall face and its long side is...
• OutbrakeTo apply brakes later and more aggressively than an opponent when approaching a corner on a race track...
• OutcropperA miner who works at or near the surface where a mineral seam or ore body is exposed. This individual...
• OutfieldThe area of a farm or agricultural property that is located further away from the main farmstead, barns, or...
• Out-of-bandDescribing a method of communication or control that uses a separate, independent channel from the primary...
• Out-of-band signalingA method of transmitting control information or signaling data over a separate channel from the main data...
• Out-of-batteryA condition in telecommunications where a subscriber line or circuit is not receiving the necessary...
• OutplantTo transplant a seedling or young plant from a nursery or protected environment into its permanent growing...
• OutputThe amount of electrical power or energy produced by a generating unit, power plant, or energy system over a...
• OutrunA section of rough grazing land lying beyond the fenced paddocks of a farm or station, used for sheep or...
• Over squareDescribing an internal combustion engine where the bore (cylinder diameter) is larger than the stroke...
• Over the topA method of applying agricultural chemicals, such as herbicides or fertilizers, directly over the canopy of a...
• OverboreTo machine an engine's cylinders to a slightly larger diameter to correct for wear, scoring, or other damage...
• OverbuilderA telecommunications company that constructs new network infrastructure, such as fiber optic cables or...
• OverbustDescribing a type of corset or garment that extends above the bust line, fully enclosing and supporting the...
• OvercastAn enclosed airway, also called an air bridge, built to carry one current of air over another in an...
• Overcurrent protective deviceAn electrical safety component that automatically opens a circuit when the current exceeds a predetermined...
• OvercutterA type of cutting machine used in underground mining that makes a horizontal slice, or kerf, at or near the...
• OverdriveA gear ratio in a vehicle's transmission where the output shaft rotates faster than the input shaft from the...
• OverfireTo subject ceramic ware to a firing temperature that is too high or for a duration that is too long for the...
• OverfiredDescribing a ceramic piece that has been subjected to excessive heat or duration during the firing process...
• OverfoggedDescribing an eye, during subjective refraction, that has been given too much plus lens power, so that the...
• OverfrequencyA condition in an alternating current (AC) electrical grid where the system's operating frequency exceeds its...
• OverhandA method of bricklaying or masonry where the worker lays bricks from the outside of a wall, reaching over the...
• OverhaulThe stage of fire fighting after the main fire is knocked down, in which crews search for hidden fire and...
• Overhead camAn engine design where the camshaft is positioned above the cylinder head, directly actuating the valves or...
• OverkillThe application of excessive force, resources, or complexity to a task beyond what is necessary to achieve...
• OverlandRelating to the transportation of freight or passengers across land, as opposed to by sea or air. This mode...
• OverlandedCargo discharged at a port other than the one stated on its bill of lading, usually through an error in...
• OverlaunchTo join planks or timbers in shipbuilding by running their butts or scarfs a set distance beyond those of the...
• OverlayA transparent sheet carrying text or artwork that is laid over a base image or mechanical so that elements...
• OverloadTo exceed the maximum permissible weight or capacity for which a vehicle or its components are designed. This...
• OverlockA type of stitch formed by looping threads over the edge of fabric to create a seam that prevents fraying and...
• OvermatterText that has been typeset but cannot fit into the allocated space on a page or within a publication. This...
• OverpoleTo continue poling molten copper with green wood poles beyond the tough-pitch stage, so that too much oxygen...
• OverprintTo print one color or image directly on top of another already printed color or image. This technique is used...
• OverpulseA pulse of energy, voltage, or current that momentarily exceeds a specified nominal or threshold value. In...
• OverrefractionA secondary refractive measurement performed on a patient already wearing corrective lenses, such as glasses...
• OverrunThe quantity of printed material produced in excess of the exact number ordered by the client. Overruns are a...
• OverseamerA specialized type of sewing machine, also known as a serger or overlocker, that joins fabric pieces while...
• OversetText that has been composed or written but cannot fit into the allocated space on a page or within a...
• OversheetTo install new cladding sheets over an existing roof covering without removing it first, for example profiled...
• OvershiftA gear change in which the shift mechanism or driver moves the selector past the intended gear, so the...
• OvershotA tool used in drilling operations to retrieve lost or broken equipment from a borehole. It consists of a...
• OversiteA layer of concrete laid over the prepared ground inside a building's footprint, below the ground floor, to...
• OversizeDescribing a component that is manufactured or machined to dimensions larger than the standard specification...
• OverspeedA condition where a rotating machine or engine operates at a rotational speed exceeding its maximum design...
• Overspray surface textureA condition of sprayed polyurethane foam roofing in which the foam surface shows a coarse, pebbled texture or...
• OverstandThe condition in a forest where trees grow beyond their optimal size or age for timber production, resulting...
• OvertopA garment designed to be worn as an outer layer over another piece of clothing, such as a shirt or dress. It...
• OvertripA condition where a protective device activates and disconnects equipment from power when no actual fault or...
• OverweightDescribing a shipment or vehicle that exceeds the maximum permissible weight for its class or the route it is...
• OxalisA genus of flowering plants, often considered a weed in agricultural settings due to its rapid growth and...

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