reversereaction

noun
UK /rɪˈvɜːs riˈækʃən/
US /rɪˈvɜːrs riˈækʃən/

A reverse reaction is when a chemical change goes backward to make the starting stuff again.

When the reverse reaction happens, the product turns back into the original reactants.


OTHER MEANINGS

2. In a reversible process, the reverse reaction undoes the forward change.

The reverse reaction balanced the forward reaction at equilibrium.

3. A response that goes in the opposite direction to an earlier one.

The reverse reaction to the new rule surprised everyone.

4. In physics, a reaction that sends something back the way it came.

The reverse reaction pushed the ball back toward the wall.