/kwo draf"euh nee/ , n.
high-fidelity sound reproduction involving signals transmitted through four different channels. Also called quadraphonics /kwod'reuh fon"iks/ , quadriphonics, quadrasonics /kwod'reuh son"iks/ , quadrisonics .
[ 1965-70; quadra-, var. of QUADRI- + -PHONY ]