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HUBBLE'S CONSTANT
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Dictionary entry overview: What does Hubble's constant mean?
• HUBBLE'S CONSTANT (noun)
The noun HUBBLE'S CONSTANT has 1 sense:
1. (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
Familiarity information: HUBBLE'S CONSTANT used as a noun is very rare.
Dictionary entry details
Sense 1
Meaning:
(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
Classified under:
Nouns denoting quantities and units of measure
Synonyms:
Hubble's constant; Hubble's parameter; Hubble constant; Hubble parameter
Hypernyms ("Hubble's constant" is a kind of...):
constant (a number representing a quantity assumed to have a fixed value in a specified mathematical context)
Domain category:
cosmogeny; cosmogony; cosmology (the branch of astrophysics that studies the origin and evolution and structure of the universe)
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