free energy

American  

noun

Thermodynamics.

1. Gibbs function.

2. Helmholtz function.

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free energy British  

noun

1. a thermodynamic property that expresses the capacity of a system to perform work under certain conditions See Gibbs function Helmholtz function

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free energy Scientific  

1. 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.

2. Also called Gibbs free energy

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Example Sentences

See Examples For:

free energy

The council said it would explore community energy schemes and work with organisations offering free energy advice.

From BBC ● Jun. 14, 2026

But the key is the free energy you obtain by letting heat from the air outside do much of the heavy lifting in boiling the refrigerant when it is cold.

From BBC ● Mar. 22, 2026

To overcome this challenge, experts in academia and industry have compiled the first ever reliable experimental benchmark of solid-solid free energy differences for chemically diverse, industrially relevant systems.

From Science Daily ● Nov. 10, 2023

The lack of reliable experimental benchmark data has been a major bottleneck in developing computational methods for accurately predicting solid-solid free energy differences.

From Science Daily ● Nov. 10, 2023

Thus the electromotive force is equal to the change of this free energy per electrochemical equivalent of reaction in the cell.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various