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aucuba an Asian evergreen shrub of the dogwood family that has variegated leaves and bears red berries.
audacious very bold or adventurous; daring. [2 definitions]
audacity courage or boldness, often accompanied by a degree of recklessness or arrogance; daring. [3 definitions]
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. [4 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]
audiogram a graph that shows the range and degree of hearing ability, or the production of such a graph.
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.
audiotape a magnetic tape used to record sound, or a sound recording on such a tape.
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).