- React is defined as to respond to something, or to act in opposition to something.
- An example of react is for a person to quickly pull his hand away after accidentally touching a hot stove.
- An example of react is for a government body to pass a bill to stop an action that is currently going on in the community.
- to act in return or reciprocally
- to act in opposition
- to act in a reverse way; go back to a former condition, stage, etc.
- to respond to a stimulus; be affected by some influence, event, etc.
- Chem. to act with another substance in producing a chemical change
Origin of react; from Late Latin reactus, past participle of reagere ; from Classical Latin re-, again + agere, to act
verbre·act·ed, re·act·ing, re·acts
- To act in response to or under the influence of a stimulus or prompting: reacted strongly to the sarcastic tone of the memorandum.
- To act in opposition to a former condition or act: composers who reacted against romanticism.
- To act reciprocally or in return.
- Chemistry To undergo a reaction: Methane reacts with hydroxyl to produce formaldehyde.
verb, transitive Chemistry
(third-person singular simple present reacts, present participle reacting, simple past and past participle reacted)
- To act or perform a second time; to do over again; to reenact.
- to react a play; the same scenes were reacted at Rome
- To return an impulse or impression; to resist the action of another body by an opposite force; as, every body reacts on the body that impels it from its natural state.
- To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.
- interreact, interreaction