Wordnet 3.0
NOUN (1)
1.
the energy that an atomic system must acquire before a process (such as an emission or reaction) can occur;
- Example: "catalysts are said to reduce the energy of activation during the transition phase of a reaction"[syn: activation energy, energy of activation]
WordNet (r) 3.0 (2006):
energy of activation
n 1: 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" [syn:
activation energy, energy of activation]