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audible heard or able to be heard.
audience a group of people gathered to hear and sometimes to see a performance, speech, or the like. [3 definitions]
audio of, concerning, or employing sound. [3 definitions]
audio- sound or hearing.
audio frequency the range of frequencies of normally audible sound, or the corresponding electronic frequencies; usu. from about fifteen or twenty to 20,000 cycles per second. [2 definitions]
audiology the science or study of hearing and disorders thereof.
audiometer an instrument that measures range and degree of hearing ability.
audiophile someone with a great interest in high-fidelity sound reproduction.
audiovisual having both sound and a picture, as does a film. [2 definitions]
audit an often official examination of records or financial accounts to check their accuracy, or the report of such an examination. [4 definitions]
auditable combined form of audit.
audition a trial performance by an actor, musician, or dancer. [5 definitions]
auditor one who audits record or accounts. [3 definitions]
auditorium a large room in which performances, speeches, and the like are given in front of an audience, or a building housing such a space.
auditory of or pertaining to hearing or the sense of hearing.
auf Wiedersehen (German) until we see each other again; good-bye for now (used at parting).
Aug. abbreviation of "August," the eighth month of the Gregorian calendar year, having thirty-one days.
Augean of or suggesting Augeas, a king in Greek mythology, or his stables, which had not been cleaned for thirty years until Hercules changed the course of a river so that it swept through them. [2 definitions]
auger a tool used by carpenters for boring holes in wood.
aught1 anything at all; any little part or bit.
aught2 the cipher 0.