/ Dictionary / Index O -oate: Meaning and Definition of Find definitions for: -oate Pronunciation: [key] a combining form used in the names of chemical compounds containing the ester or &whence;C=O group of the compound specified by the initial element: benzoate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oatcake oaten 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