/ Dictionary / Index C coeternal: Meaning and Definition of Find definitions for: co•e•ter•nal Pronunciation: (kō"i-tûr'nl), [key] — adj. existing with another eternally. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coetaneous Coeur d'Alene Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language