Cassiopeia
noun
Cas·si·o·pe·ia
ˌka-sē-ə-ˈpē-ə 
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
This image features a deep field view of the Cassiopeia constellation immersed in the glow of ionized hydrogen gas, where the two small planetary nebulas can be found, Abell 6 and the larger HFG1.
—
Miguel Claro, Space.com, 22 Mar. 2025
Stargazer Cassiopeia, Terlingua, Texas Stargazer Cassiopeia was tailor-made for night-sky enthusiasts, with space-view skylights that make sleep near impossible.
—Stephanie Vermillion, Outside Online, 4 Mar. 2025
The collective supernova aftermath is famously called Cassiopeia A.
—Sharmila Kuthunur, Space.com, 16 Jan. 2025
The constellation Cepheus is not nearly as bright as Cassiopeia and looks nothing like a king.
—Mike Lynch, Twin Cities, 9 Feb. 2025
Similar-sounding names: Cassidy, Cassiopeia, Callista, Alessia, Carissa, Celestia, Catriona, Cecilia, Carys, Clarissa
12.
—Ryan Brennan, Fort Worth Star-Telegram, 30 Jan. 2025
From the blues and golds of the breathtaking Southern Ring Nebula to the pinks, oranges and purples of the Cassiopeia A supernova remnant, James Webb Space Telescope (JWST) images render the universe in brilliant color.
—Rebecca Sohn, Space.com, 16 Jan. 2025
In the astronomy category, photographer Imran Sultan captured the intricate details of two nebulae in the Cassiopeia constellation found more than 7,000 light years away.
—Rosa Rahimi, CNN, 3 Dec. 2024
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
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Miguel Claro, Space.com, 22 Mar. 2025
Stargazer Cassiopeia, Terlingua, Texas Stargazer Cassiopeia was tailor-made for night-sky enthusiasts, with space-view skylights that make sleep near impossible.
—Stephanie Vermillion, Outside Online, 4 Mar. 2025
The collective supernova aftermath is famously called Cassiopeia A.
—Sharmila Kuthunur, Space.com, 16 Jan. 2025
The constellation Cepheus is not nearly as bright as Cassiopeia and looks nothing like a king.
—Mike Lynch, Twin Cities, 9 Feb. 2025
Similar-sounding names: Cassidy, Cassiopeia, Callista, Alessia, Carissa, Celestia, Catriona, Cecilia, Carys, Clarissa
12.
—Ryan Brennan, Fort Worth Star-Telegram, 30 Jan. 2025
From the blues and golds of the breathtaking Southern Ring Nebula to the pinks, oranges and purples of the Cassiopeia A supernova remnant, James Webb Space Telescope (JWST) images render the universe in brilliant color.
—Rebecca Sohn, Space.com, 16 Jan. 2025
In the astronomy category, photographer Imran Sultan captured the intricate details of two nebulae in the Cassiopeia constellation found more than 7,000 light years away.
—Rosa Rahimi, CNN, 3 Dec. 2024
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
Cite this Entry
“Cassiopeia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Cassiopeia. Accessed 20 Apr. 2025.
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Cassiopeia
noun
Cas·si·o·pe·ia
ˌkas-ē-ə-ˈpē-(y)ə
: a northern group of stars between Andromeda and Cepheus
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