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Meaning of dodecaphonism

do•dec•a•pho•nism

Pronunciation: (dō-dek'u-fu-niz"um, dō"di-kaf'u-), [key]
— n.
  1. musical composition using the 12-tone technique.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.