/ Dictionary / Index P promycelium: Meaning and Definition of Find definitions for: pro•my•ce•li•um Pronunciation: (prō"mī-sē'lē-um), [key] — pl. -li•a a short filament produced in the germination of a spore that bears small spores and then dies. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: promycelium (Thesaurus) promulge pron. Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language