Terms starting with A

nounIndustrial supplies, equipment, and components

Initialism of alternating current.

A1A-A1A

A wheel arrangement for diesel and electric locomotives with two three-axle bogies / trucks, the two outer axles of each bogie are powered and the centre axle is unpowered.

AAL

Initialism of asynchronous transfer mode adaptation layer; ATM adaptation layer.

AAV

nounPlumbing

Abbreviation of air admittance vent.

AAZ

nounMetallurgy

Initialism of arc attachment zone.

abb-wool

nounTextile production

Wool used to make yarn for the warp.

ABC

phraseShop talk and trade slang

Initialism of always be charging, a recommendation to remember to charge or be left without use by a low battery at an inopportune time.

abfarad

nounIndustrial electronicsdated

A unit of capacitance equal to one billion (10⁹) farads, used in the centimeter-gram-second system of units

abmho

A unit of measurement (10⁹ mhos) in the centimeter-gram-second scale used to measure conductance

abreuvoir

nounManufacturingobsolete

The joint or interstice between stones, to be filled with mortar.

ABS

nounPlumbinginformal

Initialism of acrylonitrile butadiene styrene.

absolute scale

nounMetrology and inspection

A temperature scale whose zero corresponds to absolute zero such as the Kelvin scale or Rankine scale.

absorption

nounIndustrial supplies, equipment, and components

The retaining of electrical energy for a short time after it has been introduced to the dielectric.

Abt system

nounRail equipment

A rail system used in mountainous terrain with multiple cograils.

abvolt

nounIndustrial supplies, equipment, and componentsdated

A unit of electrical potential equal to one hundred millionth of a volt (10⁻⁸ volts), used in the centimeter-gram-second system of units.

abwatt

A unit of electrical power equal to one ten-millionth of a watt (10⁻⁷ watts), used in the centimeter-gram-second system of units.

AC

nounElectrical engineeringinformal

Initialism of alternating current (often used to indicate an alternating potential rather than a current).

accelerated depreciation

The lost value a vehicle carries after it has been repaired from an accident.

accelerated motion

nounMechanical engineering

Motion with a continually increasing velocity.

The standard 12V rechargeable automotive lead-acid battery or the stand-in battery for a standard 12V automotive battery found in internal combustion engined vehicles, typically used to power the typical 12V systems, the accessories, infotainment, automotive computer, and electronic systems.

ACCH

Initialism of associated control channel.

accumulator

nounHydraulics

A container which stores hydraulic power for release, in the form of a pressurized fluid (often suspended within a larger tank of fluid under pressure).

ACD

Initialism of automatic call distributor.

ACI

Initialism of adjacent channel interference.

acid-wash

verbTextile production

To treat (a material) with bleach so as to mottle or discolor it.

ACIR

Initialism of adjacent channel interference ratio.

ACLR

Initialism of adjacent channel leakage power ratio.

acoustic coupler

nounIndustrial supplies, equipment, and componentsdated

A terminal device used to link data terminals and radio sets with the telephone network.

ACPR

Initialism of adjacent channel power ratio.

acquisition feeding time

nounAgricultural equipment

The amount of time required for a successful acquisition of a virus by its vector for subsequent transmission, in which it then becomes viruliferous.

acquisition time

The amount of time required for a GPS receiver to acquire a satellite signal in order to determine the initial position.

ACR

Initialism of automatic circuit recloser.

acre-foot

nounAgricultural equipment

A unit of measure, used for volumes of water, equal to one acre times one foot (that is, to the amount of water required to cover one acre of land to a depth of one foot), which is 43,560 cubic feet, 325,851 gallons, or about 1,233 cubic meters.

ACRR

adjacent-channel rejection ratio; the resulting measurement of comparing signal strength with a similar signal on another frequency if they are on adjacent channels.

ACS

Initialism of adjacent channel selectivity.

activator

nounMining and extraction

An agent that enables the flotation of a mineral or minerals.

active

Any component that is not passive. See Passivity (engineering).

active braking time

The amount of time elapsed between the moment when the braking force takes effect and the point in time at which it ceases.

actuator

A relay that controls the flow of electricity.

ADAS

Acronym of advanced driver-assistance system.

ADC

Initialism of analog-to-digital converter.

adder-subtractor

A circuit that is capable of adding or subtracting binary numbers.

adequately wet

adjectiveConstruction

Of asbestos: made wet for safety reasons, in order to prevent the escape of harmful particles, for example during demolition.

Ader receiver

nounIndustrial supplies, equipment, and components

A kind of telephone receiver incorporating a magnetized metal ring.

adit

A horizontal or nearly horizontal passage from the surface into a mine, as contrasted with a shaft or vertical entry passage, used for ventilation, haulage, drainage, or other purposes.

adjunct

nounManufacturing

An unmalted grain or grain product that supplements the main mash ingredient.

adjunctive

nounManufacturing

A substance added as a supplement; often in the phrase "additives and adjunctives.".

ADL

nounTextile production

Initialism of acquisition and distribution layer, the stay-dry layer of a diaper or menstrual pad that wicks liquid, particularly urine or menses, from the topsheet to the innermost absorbent core.

ADPLL

Initialism of all-digital phase locked loop.

ADSL

Initialism of asymmetric digital subscriber line.

advanced time

The time when the field will advance from the present time t.

AEB