/ Dictionary / Index G grandma: Meaning and Definition of Find definitions for: grand•ma Pronunciation: (gran'mä", -mô", grand'-, gram'-, gram'mu), [key] — n. Informal. grandmother. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: grandma (Thesaurus) grand larceny grand mal Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language