Definition of reactant in English:


Line breaks: react|ant
Pronunciation: /rɪˈakt(ə)nt


  • A substance that takes part in and undergoes change during a reaction.
    More example sentences
    • If some of the components of this system chemically react with each other then the inert substance dispersing the reactants is the inert solvent.
    • When bonds are broken in a chemical reaction, the reactants involved are colliding with enough kinetic energy to break the atoms apart.
    • The change in heat content of the products relative to the reactants in a chemical reaction is known as the change in enthalpy.

More definitions of reactant

Definition of reactant in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day tortie
Pronunciation: ˈtôrtē
a tortoiseshell cat