/ Dictionary / Index S symptosis: Meaning and Definition of Find definitions for: symp•to•sis Pronunciation: (simp-tō'sis), [key] — n. Pathol. local or general atrophy. wasting away; emaciation. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. symptomless syn- 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