Pronunciation: (rē-akt'),[key] —v.t. to act or perform again.
Pronunciation: (rē-akt'),[key] —v.i. 1. to act in response to an agent or influence: How did the audience react to the speech? 2. to act reciprocally upon each other, as two things.
3. to act in a reverse direction or manner, esp. so as to return to a prior condition.
4. to act in opposition, as against some force.
5. to respond to a stimulus in a particular manner: reacting to a shock by jumping; to react to the word “coward” with anger. 6. to undergo a chemical reaction.