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enthalpy

en·thal·py [ én thàlpee, en thálpee ]


noun 
Definition:
 
thermodynamic property of physical system: a thermodynamic property equal to the sum of the internal energy of a system and the product of its pressure and volume.
Symbol  H


[Early 20th century. < Greek enthalpein "to warm within" < thalpein "to heat"]
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