adv.
Variant: also quad · ri · phon · ic
Pronunciation: ˌ kwä-dr ə - ' fä-nik
Function: adjective
Etymology: irregular from quadri- + -phonic (as in stereophonic )
Date: 1969
: of, relating to, or using four channels for the transmission, recording, or reproduction of sound
– quad · ra · phon · ics or quad · ri · phon · ics \ -niks \ noun plural but singular in construction