Ce·phe·id
| \ ˈse-f(ē-)id
, ˈsē-
\
, ˈsē-
\
Definition of Cepheid
: any of a class of variable stars whose very regular light variations are related directly to their intrinsic luminosities and whose apparent luminosities are used to estimate distances in astronomy
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“Cepheid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Cepheid. Accessed 23 Oct. 2021.
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Time Traveler for Cepheid
The first known use of Cepheid was circa 1903
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