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n. pl. en·thal·pies
Symbol H 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.
[Greek enthalpein, to heat in (en-, in; see en-2 + thalpein, to heat) + -y.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(General Physics) a thermodynamic property of a system equal to the sum of its internal energy and the product of its pressure and volume. Symbol: H Also called: heat content or total heat
[C20: from Greek enthalpein to warm in, from en-2 + thalpein to warm]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
en•thal•py(ˈɛn θæl pi, ɛnˈθæl-)
n., pl. -pies.
a quantity associated with a thermodynamic system, expressed as the internal energy of a system plus the product of the pressure and volume of the system.
[1925–30; < Greek enthálp(ein) to warm in (en- en-2 + thálpein to warm)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
The amount of energy contained in a system.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A measure of the stored heat energy contained in a substance.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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|Noun||1.||enthalpy - (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"|
physical property - any property used to characterize matter and energy and their interactions
thermodynamics - the branch of physics concerned with the conversion of different forms of energy
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