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quadraphony

[kwo-draf-uh-nee]
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noun
  1. high-fidelity sound reproduction involving signals transmitted through four different channels.

Origin of quadraphony

1965–70; quadra-, variant of quadri- + -phony
Also called quad·ra·phon·ics [kwod-ruh-fon-iks] /ˌkwɒd rəˈfɒn ɪks/, quadriphonics, quad·ra·son·ics [kwod-ruh-son-iks] /ˌkwɒd rəˈsɒn ɪks/, quadrisonics.

quadriphonics

[kwod-ruh-fon-iks]
noun (used with a singular verb)
  1. quadraphony.

Origin of quadriphonics

see origin at quadraphonic, -ics
Also called quad·ri·son·ics [kwod-ruh-son-iks] /ˌkwɒd rəˈsɒn ɪks/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018