/ Dictionary / Index O oogamete: Meaning and Definition of Find definitions for: o•o•gam•ete Pronunciation: (ō-u-gam'ēt, -gu-mēt'), [key] — n. Cell Biol. one of a pair of structurally dissimilar gametes, the female gamete being large and nonmotile and the male gamete being small and motile. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oodles OO gauge Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language