REACT
WordNet
verb
(1) Undergo a chemical reaction; react with another substance under certain conditions
"The hydrogen and the oxygen react"
(2) Show a response or a reaction to something
(3) Act against or in opposition to
"She reacts negatively to everything I say"
WiktionaryText
Verb
- To act or perform a second time; to do over again; as, 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.