• synonyms

period-luminosity relation

[peer-ee-uh d-loo-muh-nos-i-tee]
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noun Astronomy.
  1. the relationship between the period of light variation and of the absolute magnitude of Cepheid variable stars.
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Origin of period-luminosity relation

First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018