Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun hubble's_constant

1 sense of hubble's constant

Sense 1
Hubble's constant, Hubble constant, Hubble's parameter, Hubble parameter -- ((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)
       => constant -- (a number representing a quantity assumed to have a fixed value in a specified mathematical context; "the velocity of light is a constant")