prebasic molt: Meaning and Definition of

pre•ba'sic molt'

Pronunciation: (prē-bā'sik), [key]
— Ornith. Ornith.
  1. the molt by which most birds replace all of their feathers, usually occurring annually after the breeding season.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.