/ Dictionary / Index C cyaneous: Meaning and Definition of Find definitions for: cy•an•e•ous Pronunciation: (sī-an'ē-us), [key] — adj. deep blue; cerulean. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyan blue cyanic Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language