Breadcrumb Home > Dictionary > Index C cobalt green: Meaning and Definition of Find definitions for: co'balt green' Pronunciation: [key] a medium, yellowish-green color. Also calleda pigment used in painting consisting mainly of oxides of cobalt and zinc, characterized chiefly by its green color, fast drying rate, permanence, and lack of tinting strength. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cobalt blue cobaltic ✖ Related Content Daily Word Quiz: deracinate Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language