/ Dictionary / Index C Caspian Sea: Meaning and Definition of Find definitions for: Cas'pian Sea' Pronunciation: [key] a salt lake between SE Europe and Asia: the largest inland body of water in the world. ab. 169,000 sq. mi. (438,000 sq. km); 85 ft. (26 m) below sea level. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Caspian casque Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language