quadraphonic — ONAD

quadraphonic /ˌkwädrəˈfänik, ˌkwɑdrəˈfɑnɪk

/ (also quadrophonic)

▸ adjective (of sound reproduction) transmitted through four channels:

a CD player with quadraphonic sound.

– DERIVATIVES
quadraphonically /-ik(ə)lē/ (also quadrophonically) adverb,quadraphonics /ˌkwädrəˈfäniks, ˌkwɑdrəˈfɑnɪks

/ (also quadrophonics) plural noun,quadraphony /kwäˈdräf(ə)nē, kwɑˈdrɑf(ə)ni

/ (also quadrophony) noun

– ORIGIN 1960s : from quadri- ‘four’ + a shortened form of stereophonic.