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cepheid
Definitions
[ˈsɛfɪɪd], (Noun)
Definitions:
- a variable star having a regular cycle of brightness with a frequency related to its luminosity, so allowing estimation of its distance from the earth
Phrases:
Origin
:
early 20th century: from the name of the variable star Delta Cephei, which typifies this class of stars
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definition by Oxford Dictionaries