/ Dictionary / Index C calculous: Meaning and Definition of Find definitions for: cal•cu•lous Pronunciation: (kal'kyu-lus), [key] — adj. Pathol. characterized by the presence of calculus, or stone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: calculous (Thesaurus) calculator calculus Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language