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authorization power or permission issued by an authority. [2 definitions]
authorize to give authority for or to; grant power to. [2 definitions]
authorized endowed with official permission or authority; given legal approval.
Authorized Version the English translation of the Bible authorized by King James I and published in England in 1611; King James Bible.
authorship the occupation or practice of writing. [2 definitions]
autism a developmental disorder usually becoming detectable in very early childhood that is characterized especially by atypical acquisition or use of language as well as atypical patterns of social interaction.
autistic having the developmental disorder of autism. [2 definitions]
autistic savant an autistic person who has an extraordinary gift or ability, as in mathematics, music, or art.
auto see automobile.
auto- self; same.
autobahn a superhighway in Germany or Austria; expressway.
autobiography the events of a person's life written or told by that person.
auto body the main part of a car; the part of a car that you sit inside.
autoclave a container made to hold superheated steam under pressure, used for sterilizing medical instruments or the like or for cooking. [2 definitions]
autocracy rule by one person with absolute power; despotism. [2 definitions]
autocrat a ruler who has absolute or unlimited power; dictator; despot. [3 definitions]
autocratic pertaining to or having the powers of an autocrat; absolute. [2 definitions]
auto-da-fé the public announcement of the judgment and sentences passed and imposed on people tried as heretics during the Spanish Inquisition. [2 definitions]
autogamy in botany, self-fertilization, as of a flower with its own pollen. [2 definitions]
autogiro an aircraft that is pulled forward by a conventional propeller and held up in the air by a large horizontal rotor mounted on top of the fuselage.
autograph a signature, esp. that of a famous person. [4 definitions]