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Meaning of triphasic

tri•pha•sic

Pronunciation: (trī-fā'zik), [key]
— adj.
  1. having or existing in three phases.
—n.
  1. a combination drug given in three phases and eliciting three physiological effects.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.