/ Dictionary / Index O opotherapy: Meaning and Definition of Find definitions for: op•o•ther•a•py Pronunciation: (op"u-ther'u-pē), [key] — n. organotherapy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. opossum shrimp Opp. 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