/ Dictionary / Index O oppilate: Meaning and Definition of Find definitions for: op•pi•late Pronunciation: (op'u-lāt"), [key] — -lat•ed, -lat•ing. to stop up; fill with obstructing matter; obstruct. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oppidan opponency 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