/ Dictionary / Index C cistaceous: Meaning and Definition of Find definitions for: cis•ta•ceous Pronunciation: (si-stā'shus), [key] — adj. belonging to the Cistaceae, the rockrose family of plants. Cf. rockrose family. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cist Cistercian Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language