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Hubble constant

noun
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Hub·​ble constant | \ ¦həbəl- \

Definition of Hubble constant

: a proportionality constant indicative of the rate of expansion of the universe that is used in relating the apparent velocity of recession of a distant galaxy and its distance

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History and Etymology for Hubble constant

after Edwin P. Hubble †1953 American astronomer

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“Hubble constant.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/Hubble%20constant. Accessed 11 December 2019.

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