/ Dictionary / Index I imperfect stage: Meaning and Definition of Find definitions for: imper'fect stage" Pronunciation: [key] — Mycol. Mycol. a phase in the life cycle of certain fungi in which either no spores or asexual spores, as conidia, are produced. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. imperfect rhyme imperforate Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language