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enthalpy

Syllabification: (en·thal·py)

Pronunciation: /ˈenˌTHalpē, enˈTHalpē/

Definition of enthalpy

noun

Physics

a thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume. (Symbol: H)
the change in enthalpy associated with a particular chemical process.