/ Dictionary / Index G gonium: Meaning and Definition of Find definitions for: go•ni•um Pronunciation: (gō'nē-um), [key] — pl. -ni•a the germ cell during the phase marked by mitosis. -gonium Pronunciation: [key] a combining form ofarchegonium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gonioscope gonna Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language