/ Dictionary / Index G gon-: Meaning and Definition of Find definitions for: gon- Pronunciation: [key] var. ofbefore a vowel: gonidium. -gon Pronunciation: [key] a combining form meaning “angled,” “angular,” used in the formation of compound words:Cf. gonio-. polygon; pentagon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gomuti gonad Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language