Cassiopeia

[kas-ee-uh-pee-uh]
noun, genitive Cas·si·o·pe·iae [kas-ee-uh-pee-ee] /ˌkæs i əˈpi i/ for 1.
  1. Astronomy. a northern constellation between Cepheus and Perseus.
  2. Classical Mythology. the wife of Cepheus and mother of Andromeda.
Related formsCas·si·o·pe·ian, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for cassiopeia

Cassiopeia

1
noun
  1. Greek myth the wife of Cepheus and mother of Andromeda

Cassiopeia

2
noun Latin genitive Cassiopeiae (ˌkæsɪəˈpiːiː)
  1. 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 FormsCassiopeian, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for cassiopeia

Cassiopeia

n.

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

cassiopeia in Science

Cassiopeia

[kăs′ē-ə-pēə]
  1. A W-shaped constellation in the Northern Hemisphere near Andromeda and Cepheus.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.