/ Dictionary / Index O organo-: Meaning and Definition of Find definitions for: organo- Pronunciation: [key] a combining form of Greek origin used, with the meaning “organ (of the body),” "musical instrument," or as a combining form ofin the formation of compound words: organology; organosilicon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. organizer organ of Corti Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language