Dictionaryac•ti•nop•te•ryg•i•anPronunciation: (ak"tu-nop"tu-rij'ē-un), [key] —adj. belonging or pertaining to the Actinopterygii, a group of bony fishes. —n. an actinopterygian fish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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