/ Dictionary / Index C cobalt bloom: Meaning and Definition of Find definitions for: co'balt bloom" Pronunciation: [key] — Mineral. Mineral. erythrite (def. 1) Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cobaltammine cobalt blue Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language