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Comprehensive
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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.
a1 the first letter of the English alphabet. [6 definitions]
a2 any one of a group or kind. [3 definitions]
a3 in every or in each; for every or for each.
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."
a-1 on; at; into; to.
a-2 used as an intensifier. [3 definitions]
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."
aardvark a nocturnal mammal of southern Africa that has a long snout, long ears, and powerful claws for digging, and that feeds on ants using its extensile tongue.
aardwolf a striped, nocturnal African mammal of the hyena family that feeds primarily on insects.
Aaron according to the Old Testament, the older brother of Moses and the first high priest of the Hebrew nation.
AB1 one of the four human blood groups. (See ABO system.)
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.
ab- from; away; off.