free energy

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Noun

free energy (uncountable)

1. (physics, chemistry) The energy that is available in a particular chemical system to do useful work. In more detail:
   1. The Helmholtz free energy, A (the internal energy of a system minus the product of its entropy and absolute temperature)
   2. The Gibbs free energy, G (the enthalpy of a system minus the product of its entropy and absolute temperature)

Synonyms

• exergy

Antonyms

• anergy
• bound energy

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