the thermodynamic function of a system that is equal to its enthalpy minus the product of its absolute temperture and entropy: a decrease in the function is equal to the maximum amount of work available exclusive of that due to pressure times volume change during a reversible, isothermal, isobaric process.
Also called Gibbs free energy, thermodynamic potential.
British Dictionary definitions for gibbs free energy
a thermodynamic property of a system equal to the difference between its enthalpy and the product of its temperature and its entropy. It is usually measured in joules G, (esp US) FAlso called Gibbs free energy, free enthalpy Compare Helmholtz function
C19: named after Josiah Willard Gibbs (1839–1903), US physicist and mathematician