/ Dictionary / Index C cankerous: Meaning and Definition of Find definitions for: can•ker•ous Pronunciation: (kang'kur-us), [key] — adj. resembling canker. causing canker. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cankerous (Thesaurus) cankered canker sore 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