/ Dictionary / Index O ovum: Meaning and Definition of Find definitions for: o•vum Pronunciation: (ō'vum), [key] — pl. o•va the female reproductive cell or gamete of animals, which is capable of developing, usually only after fertilization, into a new individual. the female reproductive cell or gamete of plants. an oval ornament, as in an egg-and-dart molding. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ovum (Thesaurus) ovule ow Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language