/ Dictionary / Index O olivaceous: Meaning and Definition of Find definitions for: ol•i•va•ceous Pronunciation: (ol"u-vā'shus), [key] — adj. of a deep shade of green; olive. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Oliphant olivary Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language