/ Dictionary / Index S summand: Meaning and Definition of Find definitions for: sum•mand Pronunciation: (sum'and, sum-and', su-mand'), [key] — n. a part of a sum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. summa cum laude summarily Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language