Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A thermodynamic function of a system, equivalent to the sum of the internal energy of the system plus the product of its volume multiplied by the pressure exerted on it by its surroundings.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. In thermodynamics, a measure of the heat content of a chemical or physical system.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure

Etymologies

Greek enthalpein, to heat in (en-, in; see en-2 + thalpein, to heat) + -y2.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek ἐνθάλπω ("to warm in"). (Wiktionary)

Examples

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