/ Dictionary / Index O orobanchaceous: Meaning and Definition of Find definitions for: or•o•ban•cha•ceous Pronunciation: (ôr"ō-bang-kā'shus, or"-), [key] — adj. belonging to the Orobanchaceae, the broomrape family of plants. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oro* orogen Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language