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energy of activation

   Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson 0.06 sec.
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Noun1.energy of activation - the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur; "catalysts are said to reduce the energy of activation during the transition phase of a reaction"
activation energy
energy, free energy - (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs; "energy can take a wide variety of forms"


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A catalyst can increase and an inhibitor decrease the free energy of activation [G.
Elastomers and aging by Hertz, Daniel L. / Rubber World
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