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Comprehensive
Dictionary Suite
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4WD abbreviation of "four-wheel drive," a car that drives by means of all four wheels rather than the rear wheels only, or the drive system of such, in which both front and rear wheel axles are turned by the drive shaft.
A1 abbreviation of "answer."
A2 abbreviation of "ampere" or "amperes," a unit of electrical current that refers to the quantity of current that passes through a resistor of one ohm when a potential of one volt is applied, equal to one coulomb per second.
A3 abbreviation of "angstrom" or "angstroms," a unit of length equal to one hundred-millionth of a centimeter, used in measuring light waves.
a.1 abbreviation of "acre" or "acres," a unit of area equal to 43,560 square feet or 4,047 square meters, used in measuring land.
a.2 abbreviation of "acceleration."
AA abbreviation of "Alcoholics Anonymous," a world-wide recovery program for alcoholics, administered through chapters.
A.A. abbreviation of "Associate in Arts," an undergraduate degree conferred on a person who has completed a curriculum in the liberal arts.
AAA abbreviation of "American Automobile Association," an association that provides travel-related discounts and services to its members.
A and M abbreviation of "Agricultural and Mechanical."
AB2 abbreviation of "Assembly Bill," in the U.S., a proposed law in consideration by a state assembly.
A.B. abbreviation of "artium baccalaureus" (Latin); Bachelor of Arts.
ABA abbreviation of "American Bar Association."
abbr. abbreviation of "abbreviation" or "abbreviated."
ABC abbreviation of "American Broadcasting Company."
ABM abbreviation of "antiballistic missile," a missile designed to meet and destroy a ballistic missile in flight.
AC1 abbreviation of "alternating current," electrical current that reverses direction at regular intervals. (Cf. "DC.")
AC2 abbreviation of "athletic club," a club that provides athletic equipment and sports-related services to its members.
A/C abbreviation of "air conditioning," a system that circulates cooled and dehumidified air in a building, car, or other space.
acct. abbreviation of "accountant."
ACLU abbreviation of "American Civil Liberties Union," an organization that works to defend and preserve the civil rights of citizens in the United States.