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Meaning of quadraphonic

quad•ra•phon•ic

Pronunciation: (kwod"ru-fon'ik), [key]
— adj.
  1. of, noting, or pertaining to the recording and reproduction of sound over four separate transmission or direct reproduction channels instead of the customary two of the stereo system: a quadraphonic recording.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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