/ Dictionary / Index S Symmetrel: Meaning and Definition of Find definitions for: Sym•me•trel Pronunciation: (sim'i-trul), [key] — Pharm., Trademark. Pharm.,Trademark. a brand of amantadine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. symmetalism symmetrical Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language