/ Dictionary / Index C Cassiopeia: Meaning and Definition of Find definitions for: Cas•si•o•pe•ia Pronunciation: (kas"ē-u-pē'u), [key] — gen. -pe•iae a northern constellation between Cepheus and Perseus. the wife of Cepheus and mother of Andromeda. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cassiopeia (Thesaurus) cassiope Cassirer Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language