/ Dictionary / Index I inoperculate: Meaning and Definition of Find definitions for: in•o•per•cu•late Pronunciation: (in"ō-pûr'kyu-lit, -lāt"), [key] — adj. Zool., Bot. having no operculum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. inoperative inopportune 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