/ Dictionary / Index R ranunculaceous: Meaning and Definition of Find definitions for: ra•nun•cu•la•ceous Pronunciation: (ru-nung"kyu-lā'shus), [key] — adj. belonging to the Ranunculaceae, the buttercup family of plants. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ranula raob Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language