/ Dictionary / Index S sum total: Meaning and Definition of Find definitions for: sum' to'tal Pronunciation: [key] complete numerical total: the sum total of my savings. essence; substance: The sum total of research in the field. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sumter sum-up 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