Definition of activation energy in English:

activation energy

Line breaks: ac¦ti|va¦tion en¦ergy

noun

Chemistry
  • The minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.
    More example sentences
    • The energy that is required to activate molecules for a chemical reaction is the activation energy of the reaction.
    • In addition, to cause a reaction the colliding reactant molecules must surpass a minimum energy termed the activation energy and, in many cases, the reactant molecules must have a certain spatial orientation with respect to each other.
    • Chemical reactions require a minimum or threshold energy, called the activation energy.

More definitions of activation energy

Definition of activation energy in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day skosh
Pronunciation: skəʊʃ
noun
a small amount; a little