/ Dictionary / Index C cactaceous: Meaning and Definition of Find definitions for: cac•ta•ceous Pronunciation: (kak-tā'shus), [key] — adj. belonging to the Cactaceae, the cactus family of plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cacqueteuse cactus Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language