/ Dictionary / Index C cobalt yellow: Meaning and Definition of Find definitions for: co'balt yel'low Pronunciation: [key] aureolin. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cobalt violet light Cobb Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language