/ Dictionary / Index G gemmation: Meaning and Definition of Find definitions for: gem•ma•tion Pronunciation: ( je-mā'shun), [key] — n. Biol. reproduction by gemmae. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gemmation (Thesaurus) gemmate gemmiferous Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language