/ Dictionary / Index O -opsy: Meaning and Definition of Find definitions for: -opsy Pronunciation: [key] a combining form occurring in compound words denoting a medical examination or inspection: biopsy; necropsy. -opsy Pronunciation: [key] var. ofachromatopsy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. opsonize opt Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language