Douglas Harper's Etymology Dictionary
audio-
word-forming element meaning "sound, hearing," from comb. form of Latin audire "hear," (see audience); first used in English as a word-formation element 1913.
Wiktionary
audio-
pre. used to form terms relating to sound
Usage examples of "audio-".
It was sheer blind reflex, speech centres in the brain spewing an analogue of what she was pumping out at transmission levels, like a man gesturing furiously on an audio- phone link.
He audio- and videotaped nearly everything that took place in this office.
In the X-ray it looks to me like it contains some kind of audio- or videotape, a pile of paper, and a 3.