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
"In addition, since free energy is a universal thermodynamic metric, our model can be extended to other systems with similar characteristics."
From Science Daily ● May 18, 2026
But for Mr Baker's ice cream factory, it meant free energy.
From BBC ● Aug. 27, 2025
And imagine if you were charging your car with energy from your own solar panels - you could sell this free energy to the grid for a decent margin, trials have shown.
From BBC ● Dec. 7, 2023
But Forrester blocked it; the splatter of free energy struck at the nearby trees, sending them crashing to the ground.
From Pagan Passions by Robert Stanley
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