/ Dictionary / Index C columbate: Meaning and Definition of Find definitions for: co•lum•bate Pronunciation: (ku-lum'bāt, -bit), [key] — n. Chem. niobate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. columbary Columbia Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language