/ Dictionary / Index S Summa Theologica*: Meaning and Definition of Find definitions for: Sum•ma The•o•log•i•ca Pronunciation: (soom'u thē"u-loj'i-ku, sum'u), [key] a philosophical and theological work (1265–74) by St. Thomas Aquinas, consisting of an exposition of Christian doctrine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. summate summation Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language