Boltzmann constant

or Boltzmann's constant

noun

, Physics.

1. the ratio of the universal gas constant to Avogadro's number, equal to 1.3803 × 10 −16 erg per degree C. : k

Boltzmann constant

noun

1. physics the ratio of the gas constant to the Avogadro constant, equal to 1.380 650 × 10 ^–23joule per kelvin k

Word History and Origins

Origin of Boltzmann constant¹

First recorded in 1905–10; after L. Boltzmann