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[kas-ee-uh-pee-uh] /ˌkæs i əˈpi ə/
noun, genitive Cassiopeiae
[kas-ee-uh-pee-ee] /ˌkæs i əˈpi i/ (Show IPA),
for 1.
Astronomy. a northern constellation between Cepheus and Perseus.
Classical Mythology. the wife of Cepheus and mother of Andromeda.
Related forms
Cassiopeian, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for Cassiopeia


(Greek myth) the wife of Cepheus and mother of Andromeda


noun (Latin genitive) Cassiopeiae (ˌkæsɪəˈpiːiː)
a very conspicuous W-shaped constellation near the Pole Star. Cassiopeia A is a very strong radio and X-ray source, identified as the remnant of a supernova thought to have occurred in the late 17th century
Derived Forms
Cassiopeian, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for Cassiopeia

northern constellation, in Greek mythology queen of Ethiopia and mother of Andromeda, from Latinized form of Greek Kassiepeia, Kassiopeia, of unknown etymology. Related: Cassiopeian.

Online Etymology Dictionary, © 2010 Douglas Harper
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Cassiopeia in Science
A W-shaped constellation in the Northern Hemisphere near Andromeda and Cepheus.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for Cassiopeia

in astronomy, a constellation of the northern sky, easily recognized by a group of five bright stars forming a slightly irregular W. It lies at one hour right ascension (the coordinate of the celestial sphere analogous to longitude on the Earth) and 60 north declination (angular distance north of the celestial equator). Tycho's nova, one of the few recorded supernovae in the Galaxy, appeared in Cassiopeia in 1572.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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