/ Dictionary / Index S simious: Meaning and Definition of Find definitions for: sim•i•ous Pronunciation: (sim'ē-us), [key] — adj. pertaining to or characteristic of apes or monkeys; simian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Simionato simitar Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language