mitre line

mitre lines (plural)
miter line (alternative US)

It is necessary to draw a line on the moulded surface which will be the intersection of the front and the return moulding. This line is known as a mitre line, and the intersecting arrises of the moulding, the mitre.

1914, George R. Barham, Masonry: an Elementary Text-book for Students in Trade Schools and Apprentices, page 23:

The most commonly used method for transferring depth measurements between the top and side views is through use of a 45° miter line, commonly known as the miter transfer system.

2012, Dennis Dorn, Mark Shanda, Drafting for the Theatre, page 81:

Extend its relevant points across to the mitre line and then turn those lines at 90° to the mitre line and extend them. Mark the relevant height dimensions of the standard former from the mitre line along the new extended lines and the correct shape is obtained.

2013, John Blurton, Scenery: Draughting and Construction for Theatres, Museums, Exhibitions and Trade Shows, page 159:

third angle projection
third angle projection

(engineering) A line drawn marking an angle of 45 degrees, especially in the use of aligning the depth lines between the top and side views of a third angle projection technical drawing.


shakeproof

Attach the battery tray to the frame with the three bolts. Place a shakeproof lock washer under the head of each bolt and under the attaching nuts, and attach the fuel line with the clip to the center battery tray bolt.

1943, Power Plant, Clutch, and Electrical System for Basic Vehicles, page 173:

The ideal place to achieve this bonding is close to the entry of the power cable. The bond should be made using a solder tag bolted to the chassis with a shakeproof (star) washer […]

2004, Morgan Jones, Building Valve Amplifiers, page 130:

(engineering) Of a washer: resistant to being loosened by vibration.


straight-six

internal combustion engine
internal combustion engine

(engineering, automotive) An internal combustion engine, with six cylinders mounted in a straight line along the crankcase with all the pistons driving a common crankshaft.


starting fluid

en-noun

starting fluid (countable and uncountable, plural starting fluids)

(engineering) A volatile, flammable liquid which is used to aid the starting of internal combustion engines, especially during cold weather.


ordinate dimension

ordinate dimension (plural ordinate dimensions)

Coordinate term: coordinate dimension

(engineering) A dimension marking the distance between the indicated point and an implicit zero ordinate.


ordinate dimension

en-verb

ordinate dimension (third-person singular simple present ordinate dimensions, present participle ordinate dimensioning, simple past and past participle ordinate dimensioned)

ordinate dimensions (present singular third-person)
ordinate dimensioning (participle present)
ordinate dimensioned (participle past)
ordinate dimensioned (past)

Coordinate term: coordinate dimension

(engineering) To dimension using ordinate dimensions.


RMHD

(physics, engineering) Abbreviation of radioisotopic magnetohydrodynamic.

(physics, engineering) Abbreviation of rotary magnetohydrodynamic.


GD&T

w:geometric dimensioning and tolerancing

(engineering) Initialism of geometric dimensioning and tolerancing.


feature control frame

en-noun

feature control frame (plural feature control frames)

(engineering, GD&T) A compact rectangular box in an engineering drawing conveying tolerance information on a certain feature.


microfault

(geology, engineering) A tiny fault bigger than one crystal grain.


DoB

Through-the-thickness stress distribution characterized by the degree of bending (DoB) has a major effect on the fatigue behavior of tubular joints commonly found in steel offshore structures. The determination of DoB values is essential for improving the accuracy of fatigue life estimation using the stress-life (S–N) method […]

2020 February, Hamid Ahmadi, Esmaeil Zavvar, “Degree of bending (DoB) in offshore tubular KT-joints under the axial, in-plane bending (IPB), and out-of-plane bending (OPB) loads”, in Applied Ocean Research, volume 95, article number 102015, →DOI, page 1:

(engineering) Initialism of degree of bending.


Abyssinian well

Abyssinian well (plural Abyssinian wells)

(engineering) A well built with connected pipes in the ground used for retrieving water from shallow layers.


prismatic coefficient

prismatic coefficient (plural prismatic coefficients)

(nautical, engineering) The ratio between the total submerged volume of a ship's or boat's hull, on the one hand, and the product of the length of the submerged portion of the hull with the area of the largest cross-sectional slice of the submerged portion of the hull, on the other.


block coefficient

block coefficient (plural block coefficients)

(nautical, engineering) The proportion occupied, by the submerged portion of a ship's or boat's hull, of a rectangular prism with dimensions equal to the maximum beam of the submerged portion of the hull, the length of the submerged portion of the hull, and the draft of the vessel.


void coefficient

void coefficient (plural void coefficients)

Because the Chernobyl reactor had a large positive void coefficient, the reaction accelerated rapidly once the coolant water started to boil.

(nuclear physics, engineering) A coefficient quantifying how the reactivity of a nuclear reactor changes due to the formation of bubbles in the reactor's coolant.


disbondment

(engineering) Separation of a coating from a metal surface due to excessive voltage in cathodic protection.


thermic siphon

thermic siphons (plural)
thermic syphon (alternative)

(engineering) A heat-exchanging element in the firebox or combustion chamber of some steam boiler and steam locomotive designs, directly exposed to the radiant heat of combustion.


HPU

hydraulic power unit
hydraulic power unit#English

(engineering) Initialism of hydraulic power unit.


Woodruff key

Developed by William N. Woodruff of Hartford, Connecticut, in the 1880s, to improve on existing keying practice with more economical keyseat cutting; in the era's technological context, this design offered what is today called a DFM improvement (US patent 368744).

(engineering) A semicircular key that fits partly into a circular segment keyseat, with the remainder fitting into a longitudinal slot keyway in the mating part.


unbushed

(engineering) Not incorporating the mechanical part called a bush.


goesouta

(engineering, slang) An opening in which something exits.


goesinta

goesintas (plural)
goezinta (alternative)

(engineering, slang) An opening in which something enters.


CADD

computer-aided design
computer-aided design#English

(computing, engineering) Initialism of computer-aided design and drafting.


light pipe

(engineering) A transparent structure that diffuses light via internal reflection.


positive material identification

positive material identification (uncountable)

(engineering) The process of ensuring the composition of a material, especially a metal alloy, meets specifications and standards by determining its elemental composition.


decommitment

decommitment (countable and uncountable, plural decommitments)

(computing theory, engineering) Deactivation or decommission.


sex bolt

(engineering) A type of fastener comprising a mated pair of screw and post; the post is a nut with a barrel-shaped flange and protruding boss that is internally threaded.


UNEF

Unified Extra Fine
Unified Extra Fine#English

(engineering) Initialism of Unified Extra Fine (formerly an initialism of Unified National Extra Fine), a screw thread classification within the Unified Thread Standard.


tomodynamometer

(engineering) A machine used to test and measure the cut resistance of materials.


screw bolt

(engineering) A bolt threaded at one end for a nut.


rapid unscheduled disassembly

rapid unscheduled disassembly (countable and uncountable, plural rapid unscheduled disassemblies)

rapid unscheduled disassemblies (plural)

Private spaceflight company SpaceX has released new pictures of its Falcon 9 rocket attempting to land on a floating platform in the Atlantic Ocean before undergoing what its chief executive, Elon Musk, euphemistically referred to as "RUD" – that’s "Rapid Unscheduled Disassembly". In other words, it blew up.

2015 January 16, Alex Hern, “This is what a 'rapid unscheduled disassembly' looks like”, in The Guardian:

The four-minute flight ended in what the company called a "rapid unscheduled disassembly" — meaning it blew up. But there was much to learn from the flight, the latest step in SpaceX’s explode-as-you-learn approach.

2023 April 20, Daniel Victor, Kenneth Chang, “Starship Exploded, but SpaceX Had Reason to Pop Champagne Anyway”, in The New York Times:

Shortly after stage separation, the rocket's massive Super Heavy booster exploded, with the Starship upper-stage vehicle itself detonating before reaching its target altitude in what SpaceX called a "rapid unscheduled disassembly."

2023 November 18, Josh Dinner, “SpaceX Starship megarocket launches on 2nd-ever test flight, explodes in 'rapid unscheduled disassembly'”, in Space.com, retrieved 2023-11-18:

rapid unplanned disassembly
rapid unplanned disassembly#English

(engineering, euphemistic) Synonym of rapid unplanned disassembly.


groinfield

groinfields (plural)
groin field (alternative)

(engineering) A series of groins (rigid structure built perpendicularly along a waterway) built alongside each other.


D.WRE

Diplomate, Water Resources Engineer#English

Abbreviation of Diplomate, Water Resources Engineer.


standard conditions

at standard conditions; under standard conditions

Under standard conditions, diatomic fluorine is a toxic yellow gas.

standard temperature and pressure#English

(sciences, engineering) Synonym of standard temperature and pressure.


time after bit

(drilling, engineering) The time that has passed between a bit first penetrating a rock formation and a log then being recorded opposite the formation.


circulation time

circulation time (countable and uncountable, plural circulation times)

To use this solution for any value of circulation time, we introduce below the adjusted circulation time.

2015, Izzy M. Kutasov, Lev V. Eppelbaum, Pressure and Temperature Well Testing, page 14:

The engineer requires knowledge of the circulation time if the drilling mud is to be changed.

2018, Werner Kass, Tracing Technique in Geohydrology, page 513:

Since the deeper annulus temperature is lower than that of the corresponding deeper formation, the longer the circulation time of drilling fluid is, the more heat in the deeper formation is taken away by the drilling fluid.

2020, Mehrdad Massoudi, Mathematical Modeling of Fluid Flow and Heat Transfer in .Petroleum Industries and Geothermal Applications, page 312:

(engineering, drilling) The amount of time required for mud to circulate from the suction pit, enter into the wellbore and then return to the surface.


solid model

(engineering, manufacturing) A type of computer model (of a physical object) that is defined geometrically as consisting of virtual 3D solid shapes rather than as other geometric forms (such as lines and points alone, wireframes, pixels, or voxels).


isometric projection

isometric projection (countable and uncountable, plural isometric projections)

(sciences, engineering) An axonometric projection in which the three coordinate axes appear equally foreshortened and the angle between any two of them is 120 degrees.


self-segment

en-verb

self-segment (third-person singular simple present self-segments, present participle self-segmenting, simple past and past participle self-segmented)

self-segments (present singular third-person)
self-segmenting (participle present)
self-segmented (participle past)
self-segmented (past)

LL-Q1860 (eng)-Flame, not lame-self-segment.wav

As the solution becomes more concentrated, in reality this least solvated block will begin to experience increased self-segment interaction in order to decrease the less preferred polymer–solvent interactions, while minimizing contact with the remaining two blocks.

2005 April 1, Nikod Hadjichristidis, Hermis Iatrou, Marinos Pitsikalis, Sterguis Pispas, Apostolos Avgeropoulos, “Linear and non-linear triblock terpolymers. Synthesis, self-assembly in selective solvents and in bulk”, in Progress in Polymer Science, volume 30, number 7, →DOI:

Spontaneous separation of species in a droplet may lead to asymmetric structures. Weitz’s group investigated the fabrication of Janus particles by means of thermally induced phase separation and selective adsorption of colloids in droplets in capillary-based co-axial flow focusing devices. Aqueous droplets containing the mixture of polyacrylamide (PAAm, served as the hydrogel) and poly(N-isopropylacrylamide) microgels (PNIPAm, served as the nanoparticles) were proved to be competent in forming self-segmented morphology.

2013 December 6, Xiao-Ting Sun, Mei Liu, Zhang-Run Xu, “Microfluidic fabrication of multifunctional particles and their analytical applications”, in Talanta, volume 121, →DOI, pages 163–177:

The self-partitioning SlipChip is composed of two layers of glass plates. By a simple sliding step, an aqueous solution can be solidly self-segmented into individual droplets by a capillary pressure-driven flow.

2021 June 25, Xu Yuyue, Wang Tao, Chen Zhu, Jin Lian, Wu Zuozhong, Yan Jinqu, Zhao Xiaoni, Cai Lei, Deng Yan, Guo Yuan, Li Song, He Nongyue, “The point-of-care-testing of nucleic acids by chip, cartridge and paper sensors”, in Chinese Chemical Letters, volume 32, number 12, →DOI, pages 3675-368:

(chemistry, engineering) To cause a thing to acquire appropriate size by a planned process.


platework

(engineering) An arrangement or structure of plates.


time fault

Finally, the bottom window of the figure displays the time fault estimation results.

2007, Hong-Yue Zhang, Fault Detection, Supervision and Safety of Technical Processes, page 628:

There are significant numbers of works addressing discrete time fault detection problems using Kalman filter techniques [40, 41, 42]. Similar to the multi-objective design problem of continuous time fault detection, robustness in discrete time fault detection is also a very important issue but difficult to handle.

2013, Magdi S. Mahmoud, Yuanqing Xia, Analysis and Synthesis of Fault-Tolerant Control Systems, page ix:

In closed-loop DES, timed fault isolation is the determination of time fault symptoms based on observed and modeled timed system outputs. The time fault symptoms refer to time behavior of I/Os that is inconsistent with the modeled one.

2015, Stefan Schneider, Automatic Modeling and Fault Diagnosis of Timed Concurrent Discrete Event Systems:

(sciences, engineering) A fault in the timing of an automated system.


time history

en-noun

time history (countable and uncountable, plural time histories)

mechanical engineering
mechanical engineering

(engineering, mechanical engineering) A technique used in the field of structural dynamics to evaluate the behavior of structures under different loads and conditions, involving simulating the actual loads that a structure will experience over time.


margin of safety

margin of safety (plural margins of safety)

margins of safety (plural)
safety margin (alternative)

(engineering) The ratio of the strength of a structure to the requirements placed on that structure.


latency time

latency time (countable and uncountable, plural latency times)

(engineering) A time delay between the cause and effect of a physical change in a system that is being observed.


settling time

settling time (countable and uncountable, plural settling times)

(engineering, control theory) The elapsed time from the application of an ideal instantaneous step input to the time at which the amplifier output has entered and remained within a specified error band.


pumping time

pumping time (countable and uncountable, plural pumping times)

The setting time should never exceed the pumping time, and preferably should be about half of the total pumping time.

1971, ASTM International (publisher), Sampling of Soil and Rock, page 54:

Instantaneous discharge from aquifer storage does not occur, but storativity does approach a constant value with increasing pumping time.

2001, Michael Kasenow, Applied Ground-water Hydrology and Well Hydraulics, page 384:

Inclusion of a linear current booster (LCB) extends the useful pumping time of the pump motor and enables the use of a smaller motor and a smaller array that is utilized more efficiently.

2004, Roger A. Messenger, Jerry Ventre, Photovoltaic Systems Engineering, Second Edition, page 117:

(electronics, engineering) The amount of time a pump is in operation.


time-delay spectrometry

(engineering, acoustics) A method of measurement used to measure the system response of an electroacoustic system.


ignition timing

(automotive, engineering) Of a spark ignition internal combustion engine, the timing, relative to the current piston position and crankshaft angle, of the release of a spark in the combustion chamber near the end of the compression stroke.


variable valve timing

variable valve timing (countable and uncountable, plural variable valve timings)

(automotive, engineering) The process of altering the timing of a valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions.


valve timing

(engineering) In a piston engine, the precise timing of the opening and closing of the valves.


volume clutter

(engineering) Unwanted radar or sonar wave reflection consisting of rain, hail, snow and chaff.


mushroom head

(engineering, mechanics) Of a mechanical device, any component which resembles the cap of a mushroom.


signal timing

signal timing (countable and uncountable, plural signal timings)

(road transport, automotive, engineering) A technique which traffic engineers use to distribute right of way at a signalized intersection.


sequential valve timing

sequential valve timing (countable and uncountable, plural sequential valve timings)

(automotive, engineering) An automobile variable valve timing technology in which the timing of the intake valves is varied by using hydraulic pressure to rotate the camshaft.


dynamic ignition timing

dynamic ignition timing (countable and uncountable, plural dynamic ignition timings)

(engineering, automotive) A computational process that calculates the optimal ignition timing for an engine.


continuous variable valve timing

continuous variable valve timing (countable and uncountable, plural continuous variable valve timings)

continuous variable valve timings (plural)

(engineering, automotive) A system allowing for the perpetual adjustment of valve timing in an engine in order to optimize it for all engine speeds and conditions.


basic ignition timing

basic ignition timing (usually uncountable, plural basic ignition timings)

(engineering, automotive) The position of the crankshaft in relation to the top dead center when the piston is located at the top of the compression stroke.


computer-controlled timing

computer-controlled timing (countable and uncountable, plural computer-controlled timings)

(engineering, automotive) Any type of timing in a vehicle, machine, or other experiment aided by an internal timer.


active timing

active timing (countable and uncountable, plural active timings)

(sciences, engineering) A type of accurate timing system in which a battery-powered active chip, known as a transponder, sends a unique code to the detection loop, which is connected to a decoder.


time domain electromagnetics

time domain electromagnetics (uncountable)

electromagnetic wave
electromagnetic wave

(physics, engineering) A group of techniques that describe electromagnetic wave motion.


intake valve

(engineering, automotive) A valve in the cylinder head of an internal combustion engine that controls the passage of fluid to to be drawn into the cylinder.


toggle valve

(machinery, engineering) An implement that uses a directional toggle switch in order to control the flow of fluid in a piping system.


CV joint

constant-velocity joint
constant-velocity joint#English

(engineering) Abbreviation of constant-velocity joint.


constant-velocity joint

constant-velocity joint (plural constant-velocity joints)

constant-velocity joints (plural)
constant velocity joint (alternative)

(engineering) A mechanical coupling which allows the shafts to rotate freely and compensates for the angle between the two shafts, within a certain range, to maintain the same velocity, commonly used in front-wheel drive vehicles.


constant velocity

constant-velocity boots

(engineering, attributive) Describing constant-velocity joints.


U-joint

(engineering) Abbreviation of universal joint.


air data

Meronyms: airspeed, altitude, bearing, groundspeed; pitch, roll, yaw

(engineering, aviation) Information regarding an aircraft's flight parameters that is collected by sensors on the aircraft.


lockoff

The amount of load locked into a tie depends upon the earth pressures and their distributions assumed for the wall . The following recommended lockoff loads are intended to serve as a guideline for use.

1975, United States. Federal Highway Administration. Offices of Research and Development, Report No. FHWA-RD, page 265:

Measured lockoff loads varied significantly at each site , although the same jack and crew were used to install tiebacks at the Cullen Center and First City sites.

1989, Journal of Geotechnical Engineering - Volume 115, page 536:

Another movement mentioned in the foregoing sections involves wedge pullin of the anchorage type shown in Fig. 7-9, occurring at lockoff. In general, wedge pullin is monitored as indication of lockoff loss and the corresponding residual load at that time.

1991, Petros P. Xanthakos, Ground Anchors and Anchored Structures, page 313:

However, 30 months after installation nearly 45 percent of the anchors exceeded 105 percent the lockoff load.

1994, Petros P. Xanthakos, Lee W. Abramson, Donald A. Bruce, Ground Control and Improvement, page 128:

(engineering) The act of fixing a ground anchor in place at a specific tension calculated to accommodate the expected load. Also, the tension at which the ground anchor has been fixed.


two-dimensional material
two-dimensional material#English

(engineering) Abbreviation of two-dimensional material.


sample line

(drafting, engineering) A line segment placed at intervals along an existing alignment.


sandwich shell

In sandwich shells, because of their initial curvature, bending moments (stress couples) give rise to transverse normal stresses in the core.

2018, Jack R. Vinson, The Behavior of Sandwich Structures of Isotropic and Composite Materials, page 320:

(construction, engineering) A structure consisting of a core (which can be foam or solid, honeycomb, web, corrugated or truss) sandwiched between two thinner outer layers, often made of metal or composite.


belt track

It has been found that by simply substituting a belt track for an undercarriage with wheels in tandem, the unit load on the ground can be halved without increasing the bulk of the undercarriage.

Figure III shows the Terrapin, a belt-track vehicle designed to transport cargo over very difficult terrain.

1962, Science, Technology, and Development, page 141:

Comparing the traction capabilities of a rubber belt track with wheeled equipment tires.

2017, Owen C. Duffy, Gus Wright, Scott A. Heard, Fundamentals of Mobile Heavy Equipment:

(mechanics, engineering) A continuous track used to propel vehicles that drive on difficult terrain.


postmechanical

Postmechanical operations include: (1) removal of excess weld metal, slag, and weld spatter, (2) rough or finish machining to dimensional requirements of the weldment, and (3) metal conditioning processes such as peening or roll planishing to reduce cracking tendencies physically and to increase weld bead strength.

1989, William Winchell, Realistic Cost Estimating for Manufacturing, page 121:

Industrial capitalism, in its hard metallic form, is melted away from the hard core of global capitalism […] from human labor time to postmechanical production processes where human labor is reduced to assemblage work, the wastage of which forms the assemblages of human posturban communities.

2015, Charles C. Lemert, Structural Lie: Small Clues to Global Things, page 16:

Primary sludge is generated by postmechanical treatment after the primary stage, whereas waste-activated sludge is generated via biological treatment by transformation of soluble contamination (mainly C, N, and P) into particulate biomass.

2019, Jose Antonio Olivares, Daniel Puyol, Juan Antonio Melero, Wastewater Treatment Residues as Resources for Biorefinery Products and Biofuels, page 27:

(mechanics, engineering) Occurring after a mechanical process has completed.


diesel exhaust

(engineering, automotive) Exhaust from a diesel engine.


undertile

LL-Q1860 (eng)-Flame, not lame-undertile.wav

(engineering, construction) Of or pertaining to an area or surface beneath or below tile.


antiflap

(engineering, aviation) Preventing a component from flapping.


mass finishing

mass finishing (countable and uncountable, plural mass finishings)

(engineering, industrial process) A group of manufacturing processes that allow large quantities of parts to be simultaneously finished.


UNF

(engineering) Initialism of Unified Fine (formerly an initialism of Unified National Fine), a screw thread classification within the Unified Thread Standard.


indicator card

(engineering) A diagram showing engine pressure and changes in volume.


Culmann's diagram

After Carl Culmann (1821–1881), German engineer.

(engineering) A kind of diagram showing the internal forces in the members of a truss.


aeronautical engineer

aeronautical engineer (plural aeronautical engineers)

(engineering) A professional who designs, develops, tests, and maintains aircraft and related systems.


requirements engineer

requirements engineer (plural requirements engineers)

software engineering
software engineering

(engineering, software engineering) A professional who defines, documents, and maintains requirements for a project.


pump valve

(mechanics, engineering) A mechanical device that controls the flow of fluids through a pump and its associated pipes.


skew rolling mill

skew rolling mill (plural skew rolling mills)

(engineering) A specialized machine used to manufacture spherical metal products such as ball bearings.


factory setting

factory setting (plural factory settings)

(computing, computer hardware, technology, also engineering) The default configuration of a device when it is first manufactured and sold.


process upset

process upset (countable and uncountable, plural process upsets)

(engineering, industry) A sudden deviation from the normal operational behavior of an industrial process.


USACE

U.S. Army Corps of Engineers
w:U.S. Army Corps of Engineers

Initialism of U.S. Army Corps of Engineers.


SATP

w:standard ambient temperature and pressure

(engineering) Initialism of standard ambient temperature and pressure.


slide plate

(engineering) A linear bearing that may be part of the expansion joints of bridges, high temperature horizontal ducts of water-tube boilers and other mechanical or structural engineering applications.


green-gray

(construction, engineering) Of infrastructure: combining natural systems with traditional engineering.


shrink rate

Patternmakers, moldmakers, diemakers, and toolmakers must understand the shrink rates of the materials involved in the casting, molding, and stamping processes.

(engineering) The percentage or fraction of an original size, weight, or mass that is lost when an object or material shrinks.


girthweld

/ˈɡɜːθ ˌwɛld/

Thus, experimental work is needed to verify which model most accurately predicts girthweld behavior.

1980 February, Betty L. Burris, Rebecca J Morehouse, editors, Publications of the National Bureau of Standards 1979 Catalog: A Compilation of Abstracts and Key Word and Author Indexes (National Bureau of Standards Special Publication), NATIONAL BUREAU OF STANDARDS, page 236:

Axial field MFL is extremely good at detecting a metal loss features transverse to the field (e.g. a girthweld defect) whereas a long narrow feature aligned in the axial direction with the field can be difficult to detect (e.g. seamweld defect of long narrow axial corrosion).

2000, R. Denys, editor, PIPELINE TECHNOLOGY: Proceding of the 3rd International Pipeline Technology Conference, Brugge, Belgium, May 21-24, 2000, Elsevier, page 63:

PIH is a supplier of onshore and offshore coating products, including weld induction heating services, anti-corrosion, infill, abrasion resistant, and flow assurance girthweld coatings.

2024 April 20, Wikipedia contributors, “CRC-Evans”, in English Wikipedia, Wikimedia Foundation:

(engineering, construction) A circumferential weld that joins two cylindrical sections, such as pipes or pressure vessels, by welding around their perimeter. Girth welds are commonly used in pipeline construction.


oil filter

An ordinary roll of toilet paper makes an ideal element for any oil filter. Laboratory tests prove it cleans oil faster and better than popular makes of filter elements.

1950, Popular Science Publishing Company, “Toilet Paper Filters Oil Better ... At Fraction Of Cost”, in The Popular Science Monthly, volume 156, page 270:

(engineering, automotive) A filter designed to remove contaminants from engine oil, transmission oil, lubricating oil, or hydraulic oil.


hydraulic fluid

hydraulic fluid (countable and uncountable, plural hydraulic fluids)

(engineering, automotive) A synthetic or mineral-based fluid that transfers power in hydraulic equipment and machinery.


transmission fluid

transmission fluid (countable and uncountable, plural transmission fluids)

(engineering, automotive) A specialized lubricant used in a vehicle to ensure the proper functioning of the transmission system.