/ Dictionary / Index O optime: Meaning and Definition of Find definitions for: op•ti•me Pronunciation: (op'tu-mē"), [key] — n. (formerly at Cambridge University, England) a student taking second or third honors in the mathematical tripos. Cf.(def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. optimal optimism Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language