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react
intransitive verb
- 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
transitive verb
to cause to react; specif., to produce a chemical change in
See react in American Heritage Dictionary 4
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