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Mollier diagram

American  
[mawl-yey] / ˈmɔl yeɪ /

noun

Thermodynamics.
  1. a graph showing the enthalpy of a substance as a function of its entropy when some physical property of the substance, as temperature or pressure, is kept at a specified constant value.


Etymology

Origin of Mollier diagram

Named after Richard Mollier (died 1935), German engineer