Word Study
quadraphonic
WORDNET DICTIONARY
Adjective quadraphonic has 1 sense
- quadraphonic(a = adj.pert) quadrasonic, quadriphonic, quadrisonic - of or relating to quadraphony; "his quadraphonic sound system" Derived form noun quadraphony1
OXFORD DICTIONARY
quadraphonic, adj. (also quadrophonic) (of sound reproduction) using four transmission channels.
Derivative
quadraphonically adv. quadraphonics n.pl. quadraphony n.
Etymology
QUADRI- + STEREOPHONIC
For further exploring for "quadraphonic" in Webster Dictionary Online