free-energy

Collins
World English Dictionary
free energy
 
n
Gibbs function See Helmholtz function a thermodynamic property that expresses the capacity of a system to perform work under certain conditions

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American Heritage
Medical Dictionary

free energy n.
A thermodynamic quantity that is the difference between a system's internal energy and the product of its absolute temperature and entropy; the portion of total energy of a natural system that can be used for work.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
free energy  
A thermodynamic quantity that is the difference between the internal energy of a system and the product of its absolute temperature and entropy. Free energy is a measure of the capacity of the system to do work. If its value is negative, the system will have a tendency to do work spontaneously, as in an exothermic chemical reaction. Free energy is measured in kilojoules per mole. Also called Gibbs free energy.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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