/ Dictionary / Index O -opia: Meaning and Definition of Find definitions for: -opia Pronunciation: [key] a combining form occurring in compound words denoting a condition of sight or of the visual organs: diplopia; hemeralopia; myopia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ophüls opiate 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