/ Dictionary / Index M macrogamete: Meaning and Definition of Find definitions for: mac•ro•gam•ete Pronunciation: (mak"rō-gam'ēt, -gu-mēt'), [key] — n. Cell Biol. (in heterogamous reproduction) the larger and usually female of a pair of conjugating gametes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. macrofossil macrograph Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language