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Definition of Cepheid variable
1. Noun. (star) A radially pulsating (expanding and contracting) variable star with a regular period and known relationship between period and intrinsic brightness. ¹
¹ Source: wiktionary.com
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1. Noun. (star) A radially pulsating (expanding and contracting) variable star with a regular period and known relationship between period and intrinsic brightness. ¹
¹ Source: wiktionary.com