Cassiopeia

noun

Cas·​si·​o·​pe·​ia ˌka-sē-ə-ˈpē-ə How to pronounce Cassiopeia (audio)
1
: the wife of King Cepheus who gives birth to Andromeda and is later changed into a constellation
2
[Latin (genitive Cassiopeiae), from Greek Kassiopeia] : a northern constellation between Andromeda and Cepheus

Examples of Cassiopeia in a Sentence

Recent Examples on the Web Like Cassiopeia, the Big Dipper is also circumpolar, so the two are always opposite in the northern night sky. Jamie Carter, Forbes, 9 Sep. 2024 In Dallas-Fort Worth, look north and find the constellation Cassiopeia. Tasha Tsiaperas, Axios, 15 Aug. 2024 There, in his observatory, Brahe discovered a supernova in the Cassiopeia formation and irregularities in the moon’s orbit, long before the invention of the telescope in 1608. Sonja Anderson, Smithsonian Magazine, 2 Aug. 2024 If the Chrysalis is still a dusty construction site, the nearby Cassiopeia is a hive of activity. Adrian Cho, science.org, 18 July 2024 Shortly after launch, the observatory focused on what has become an iconic celestial target: supernova remnant Cassiopeia A. Chandra has returned to this feature again and again, revealing new insights each time. Ashley Strickland, CNN, 24 July 2024 One image shows Cassiopeia A, a remnant of a supernova 340 years ago. Cybele Mayes-Osterman, USA TODAY, 24 July 2024 Chandra has observed Cassiopeia A for more than two million seconds since the start of its mission, and its data adds a web of blue veins to this image, depicting hot debris from the explosion and its associated blast wave. Carlyn Kranking, Smithsonian Magazine, 23 July 2024 For about half a year, the 'new' star appeared in the constellation Cassiopeia. Eric Berger, Ars Technica, 28 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'Cassiopeia.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Latin, from Greek Kassiopeia

First Known Use

1596, in the meaning defined at sense 1

Time Traveler
The first known use of Cassiopeia was in 1596

Dictionary Entries Near Cassiopeia

Cite this Entry

“Cassiopeia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Cassiopeia. Accessed 31 Oct. 2024.

Kids Definition

Cassiopeia

noun
Cas·​si·​o·​pe·​ia ˌkas-ē-ə-ˈpē-(y)ə How to pronounce Cassiopeia (audio)
: a northern group of stars between Andromeda and Cepheus

More from Merriam-Webster on Cassiopeia

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!