Clapeyron equation

noun

Cla·​pey·​ron equation

ˈklapāˌrōn-,

-rän-

variants or Clapeyron's equation

: an equation relating to change of phase in a pure substance (as vaporization of a liquid) that gives the rate of change with temperature of the pressure at equilibrium between the phases in terms of the heat of transition and the volumes of the phases before and after the transition compare clausius-clapeyron equation

Word History

Etymology

after B.P.E.Clapeyron †1864 French physicist

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!