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WordReference Random House Learner's Dictionary of American English © 2024re•act /riˈækt/USA pronunciation v. [no object]- to respond to a stimulus:reacted to the dust by sneezing.
- to act in a reverse direction or manner, esp. so as to return to a condition that existed earlier in time.
- to act in opposition:taxpayers reacting against corruption with their votes.
- Chemistryto undergo a chemical change:The iodine and the unknown chemical reacted by giving off smoke.
See -act-. Collins Concise English Dictionary © HarperCollins Publishers:: react /rɪˈækt/ vb - (intr; followed by to, upon etc) (of a person or thing) to act in response to another person, a stimulus, etc, or (of two people or things) to act together in a certain way
- (intransitive) followed by against: to act in an opposing or contrary manner
- (intransitive) to exert an equal force in the opposite direction to an acting force
- to undergo or cause to undergo a chemical reaction
Etymology: 17th Century: from Late Latin reagere, from re- + Latin agere to drive, do re-act (rē akt′),USA pronunciation v.t. - to act or perform again.
re•act (rē akt′),USA pronunciation v.i. - to act in response to an agent or influence:How did the audience react to the speech?
- to act reciprocally upon each other, as two things.
- to act in a reverse direction or manner, esp. so as to return to a prior condition.
- to act in opposition, as against some force.
- to respond to a stimulus in a particular manner:reacting to a shock by jumping; to react to the word "coward'' with anger.
- Chemistryto undergo a chemical reaction.
- re- + act, probably modeled on Medieval Latin reagere 1635–45
Collins Concise English Dictionary © HarperCollins Publishers:: re-act /riːˈækt/ vb - (transitive) to act or perform again
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