Total heat of a thermodynamic system

• The sum of the internal energy of a system and the product of its volume and pressure
• It's symbolized by an H
• Thermodynamic quantity

Wiktionary Word definitions in Wiktionary
n. (context physics chemistry English) In thermodynamics, a measure of the heat content of a chemical or physical system.

WordNet Word definitions in WordNet
n. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure; "enthalpy is the amount of energy in a system capable of doing mechanical work" [syn: heat content , total heat , H ]

Wikipedia Word definitions in Wikipedia
Enthalpy (Symbol: H ) is a measurement of energy in a thermodynamic system . It is the 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. More ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1927 in physics, from Greek enthalpein "to warm in," from en "in" (see en- (2)) + thalpein "to heat," from thalpos "warmth, heat," especially "summer heat."