/ Dictionary / Index C collat.: Meaning and Definition of Find definitions for: collat. Pronunciation: [key] collateral. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. collar rot collate Related Content Daily Word Quiz: vernacular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language