/ Dictionary / Index S summa: Meaning and Definition of Find definitions for: sum•ma Pronunciation: (soom'u, sum'u), [key] — pl. sum•mae sum•mas. a comprehensive work or series of works covering, synthesizing, or summarizing a particular field or subject. a work or series of works that is a summary of all human knowledge. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sumi-e* summable Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language