Hubble constant

proper noun

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's constantHubble's parameterHubble parameter
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Meanings

proper noun

alternative Hubble's constant

  1. astronomyA 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.

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's constantHubble's parameterHubble parameter
Broader
constant

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

After Edwin Powell Hubble, American astronomer

Full word history & related roots →

Translations

Bulgarian зако́н на Хъ́бъл
  • зако́н на Хъ́бъл (zakón na Hắbăl)number
Catalan constant de Hubble
  • constant de Hubblenumber
Chinese Mandarin 哈勃定律, 哈勃常數 /哈勃常数
  • 哈勃定律 (hābó dìnglǜ)number
  • 哈勃常數 /哈勃常数 (hābó chángshù)number
Czech Hubbleova konstanta
  • Hubbleova konstantanumber
Dutch wet van Hubble
  • wet van Hubblenumber
Estonian Hubble'i seadus
  • Hubble'i seadusnumber
Finnish Hubblen vakio
  • Hubblen vakionumber
French loi de Hubble
  • loi de Hubblenumber
German Hubble-Konstante
  • Hubble-Konstantenumber
Hebrew קבוע האבל
  • קבוע האבל (kavúa Hábl)number
Hungarian Hubble-törvény
  • Hubble-törvénynumber
Indonesian hukum Hubble
  • hukum Hubblenumber
Italian legge di Hubble
  • legge di Hubblenumber
Japanese ハッブルの法則
  • ハッブルの法則 (Habburu no hōsoku)number
Norwegian Hubbles lov
  • Hubbles lovnumber
Polish stała Hubble'a
  • stała Hubble'anumber
Portuguese constante de Hubble
  • constante de Hubblenumber
Russian зако́н Ха́ббла
  • зако́н Ха́ббла (zakón Xábbla)number
Slovak Hubblova konštanta
  • Hubblova konštantanumber
Spanish ley de Hubble
  • ley de Hubblenumber
Swedish Hubbles lag
  • Hubbles lagnumber
Cite this entry
APA

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

MLA

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

Chicago

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

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