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
Close by, Cassiopeia the Queen and Cepheus the King hang high in the northwest heavens in the early evening.
—
Mike Lynch, Twin Cities, 1 Feb. 2026
The developers have also said that the crew of the Cassiopeia may eventually have to choose between their own survival and the survival of everyone back on Earth, aka the Ellen Ripley dilemma.
—Alan Bradley, Space.com, 5 Jan. 2026
As the Big Dipper gets lower on the horizon, Cassiopeia gets higher, with both completing one rotation of Polaris every 24 hours.
—Jamie Carter, Forbes.com, 16 Sep. 2025
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Mike Lynch, Twin Cities, 1 Feb. 2026
The developers have also said that the crew of the Cassiopeia may eventually have to choose between their own survival and the survival of everyone back on Earth, aka the Ellen Ripley dilemma.
—Alan Bradley, Space.com, 5 Jan. 2026
As the Big Dipper gets lower on the horizon, Cassiopeia gets higher, with both completing one rotation of Polaris every 24 hours.
—Jamie Carter, Forbes.com, 16 Sep. 2025
Cite this Entry
“Cassiopeia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Cassiopeia. Accessed 14 Feb. 2026.
Copy CitationKids Definition
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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