Cepheid variable
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A radially pulsating (expanding and contracting) variable star with a regular period and known relationship between period and intrinsic brightness.
Etymology
From Latin Delta Cephei, the first such star identified. From Cepheus, the name of the constellation in which such stars were first discovered. From being a star with variable brightness.