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| Ce·phe·id [ sfee id, séffee id ] (plural Ce·phe·ids) or Ce·phe·id var·i·a·ble [ sfee id vérree əb'l, sèffee id vérree əb'l ] (plural Ce·phe·id vari·ables) |
noun |
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| Definition: |
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star varying in brightness: a star that has regular periods of varying brightness, usually lasting from one to fifty days
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| [Early 20th century. <Cepheus + -id] |
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