free energy
Americannoun
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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.
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Also called Gibbs free energy
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Last month, the port announced a partnership with startup Bluecore Energy to develop emissions free energy that could one day help power the port’s operations.
From Los Angeles Times ● Aug. 28, 2026
The charity, which offers offer free energy advice, debt support, and grants, is expecting to see up to 50% more people using the service than last year because energy debt is piling up.
From BBC ● Oct. 14, 2025
But for Mr Baker's ice cream factory, it meant free energy.
From BBC ● Aug. 27, 2025
Reports in the literature are sparse and much of the experimental data on free energy determinations for molecules of pharmaceutical interest is simply not in the public domain.
From Science Daily ● Nov. 10, 2023
Set up a topological relation that drained all the free energy out of the system.
From The Lost Kafoozalum by Pauline Ashwell
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