Cas·si·o·pe·ia 
(kăs′ē-ə-pēə)
(kăs′ē-ə-pēə)n.
A W-shaped constellation in the Northern Hemisphere between Andromeda and Cepheus.
[Latin Cassiepīa, Cassiopēa, from Greek Kassiepeia, Cassiopeia, daughter of Cepheus and Andromeda, who was changed into a constellation.]