/ Dictionary / Index P perfect stage: Meaning and Definition of Find definitions for: per'fect stage" Pronunciation: [key] — Mycol. Mycol. a phase in the life cycle of certain fungi in which sexual spores are formed, as the asci in the sexual stage of the ascomycete. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. perfect square perfect year Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language