/ Dictionary / Index C cruciferous: Meaning and Definition of Find definitions for: cru•cif•er•ous Pronunciation: (kr-sif'ur-us), [key] — adj. bearing a cross. belonging to the Cruciferae, the mustard family of plants. Cf. mustard family. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cruciferous (Thesaurus) crucifer crucifix Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language