/ Dictionary / Index C Callas: Meaning and Definition of Find definitions for: Cal•las Pronunciation: (kal'us), [key] 1923–77, U.S. soprano. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: callas (Thesaurus) Callao callathump Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language