| autobiography |
the events of a person's life written or told by that person. |
| autograph |
a signature, esp. that of a famous person. [4 definitions] |
| automated teller machine |
a computerized machine serving the function of a bank teller. |
| automatic |
acting by itself without outside power or influence. [4 definitions] |
| automation |
operation by machinery rather than by people. |
| automobile |
a four-wheeled vehicle with a built-in, self-propelled motor requiring a driver and used on roads to carry people; passenger car. |
| autopsy |
a superficial and surgical examination of a corpse, usu. to find the cause of death. [2 definitions] |
| autumn |
the season of the year between summer and winter, in the northern hemisphere continuing from the September equinox to the December solstice; fall. |
| auxiliary |
serving to help, assist, or support. [7 definitions] |
| auxiliary verb |
a verb used in conjunction with a main verb in a clause that assists the main verb in reflecting aspects, voices, moods, and tenses. In the sentence "They have escaped," the main verb is "escaped," and the auxiliary verb is "have." |
| availability |
the condition of being available. |
| available |
able to be had for use or purchase; at hand. [2 definitions] |
| avalanche |
the sudden rush of a large quantity of snow, ice, or rocks down a mountain. [4 definitions] |
| Ave. |
abbreviation of "Avenue," a street, esp. a wide one (written as part of a proper name). |
| avenue |
a street, esp. a wide one. [2 definitions] |
| average |
a usual amount or kind; that which is not extreme or extraordinary. [9 definitions] |
| average out |
to amount to an average according to arithmetic calculation (usu. fol. by "to"). [2 definitions] |
| avert |
to turn aside or away. [2 definitions] |
| aviation |
the act, practice, or technology of human flight, esp. in airplanes. |
| aviator |
someone who flies an aircraft; pilot. |
| avid |
characterized by great enthusiasm or zeal. [2 definitions] |