/ Dictionary / Index C cerulean: Meaning and Definition of Find definitions for: ce•ru•le•an Pronunciation: (su-r'lē-un), [key] — adj., n. deep blue; sky blue; azure. a sky-blue tincture, used esp. on the Continent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cerulean (Thesaurus) certosina cerulean blue Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language