/ Dictionary / Index M megasporophyll: Meaning and Definition of Find definitions for: meg•a•spo•ro•phyll Pronunciation: (meg"u-spôr'u-fil, -spōr'-), [key] — n. Bot. a sporophyll producing megasporangia only. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: megasporophyll (Thesaurus) megaspore megass Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language