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From Ancient Greek ἐνθάλπω (enthálpō, “to warm in”). Coined by Dutch physicist Heike Kamerlingh Onnes, but first used in print by J. P. Dalton in 1909 in a paper titled "Researches on the Joule-Kelvin-effect, especially at low temperatures".
- (physics, chemistry) In thermodynamics, a measure of the heat content of a chemical or physical system.
- , where H is enthalpy, U is internal energy, p is pressure, and V is volume.
a measure of the heat content