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Definition of Variable star
1. Noun. A star that varies noticeably in brightness.
Exact synonyms: Variable
Specialized synonyms: North Star, Polar Star, Polaris, Pole Star, Polestar
Generic synonyms: Star
Specialized synonyms: North Star, Polar Star, Polaris, Pole Star, Polestar
Generic synonyms: Star
Definition of Variable star
1. Noun. (star) Any star whose brightness varies. ¹
¹ Source: wiktionary.com