Boltzmann constant

noun

Boltz·​mann constant ˈbōlts-mən- 

-ˌmän-

variants or less commonly Boltzmann's constant

: the ideal gas constant per molecule being the ratio of the molar gas constant to the number of molecules of a substance in a gram molecule and having a value of exactly 1.380649 × 10⁻²³ joules per kelvin

Word History

Etymology

after Ludwig Boltzmann †1906 Austrian physicist

First Known Use

1914, in the meaning defined above