a combining form used in the formation of compound words, with the meanings: “sound within the range of human hearing” (audiometer); “hearing” (audiology); “sound reproduction” (audiophile).
Origin: < Latin audī- (stem of audīre to hear) + -o-
"sound, especially recorded or transmitted," 1934, abstracted from prefix audio- (in audio-frequency, 1919, etc.), from L. audire "hear" (see audience).
file format Sound, one component of multimedia. Computers (and audio compact discs and digital audio tape) work with digital audio, in contrast to vinyl disks or analogue tape. (1999-07-30)