/ Dictionary / Index C Cassin: Meaning and Definition of Find definitions for: Cas•sin Pronunciation: (ka-san'), [key] 1887–1976, French diplomat and human-rights advocate: at the United Nations 1946–68; Nobel peace prize 1968. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cassimere Cassini 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