/ Dictionary / Index G gumma: Meaning and Definition of Find definitions for: gum•ma Pronunciation: (gum'u), [key] — pl. gum•mas, gum•ma•ta a rubbery, tumorlike lesion associated with tertiary syphilis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: gumma (Thesaurus) gumi gummed Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language