(1822–88), German physicist, one of the founders of modern thermodynamics. He was the first, in 1850, to formulate the second law of thermodynamics, developing the concept of a system's available thermal energy and coining the term entropy for it.
Definition of Clausius, Rudolf in US English:
Clausius, Rudolf
proper nounˈklouzēəs
(1822–88), German physicist. He was one of the founders of modern thermodynamics.