/ Dictionary / Index C calcareous: Meaning and Definition of Find definitions for: cal•car•e•ous Pronunciation: (kal-kâr'ē-us), [key] — adj. of, containing, or like calcium carbonate; chalky: calcareous earth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: calcareous (Thesaurus) calcarate calcareous tufa Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language