Hubble's constant

A form of Hubble constant — A number that expresses the rate of expansion of the universe; the velocity at which a distant object is receding from the Earth divided by its distance; its reciprocal determines the age of the universe.

Similar
Hubble constantHubble's parameterHubble parameter
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Meanings

proper noun
  1. alternativeAlternative spelling of Hubble constant.

Synonyms & antonyms

noun(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today

Similar
Hubble constantHubble's parameterHubble parameter
Broader
constant
Also see
hubble constant

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

Hubble's constant. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Hubble's%20constant

MLA

“Hubble's constant.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Hubble's%20constant. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Hubble's constant,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Hubble's%20constant.

Source: Hubble's constant on Wiktionary, CC BY-SA 4.0.