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# react

verb (react, reacts, reacted, reacting); noun: reaction

«react» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. To act, speak or feel in a certain way because of something that has happened (How did she react to the news?). [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#m1)
2. (science) To change when mixed with another substance, making something new (chemical reaction). [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#m2)
3. (health) To become ill or get a rash after eating, touching or breathing something (an allergic reaction). [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#m3)
4. React against: to do the opposite of what you are told or what others do. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#m4)

### In the lessons

In science, when vinegar and baking soda react they make carbon dioxide gas (fizzing); iron reacts with water and air to make rust. In feelings lessons, we learn to react calmly — stop, breathe, think — rather than lashing out. In health: some people react badly to peanuts or bee stings, and need help fast. In sport and safety, quick reactions help you dodge a ball or stop your bike. Phrases: react to, react with, react quickly, overreact, allergic reaction.

### Examples

- How did your mum react when you told her? [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#x1)
- Vinegar reacts with baking soda and fizzes. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#x2)
- He reacted quickly and caught the falling glass. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#x3)
- Some people react to peanuts and need medicine fast. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#x4)
- Don't react angrily — count to ten first. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#x5)
- Iron reacts with water and air to make rust. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#x6)
- The cat reacted to the noise by hiding under the bed. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/#x7)

### Note

«React to» something (a person reacts to news); «react with» something (a chemical reacts with another). Noun: reaction. «Overreact» = react too strongly.

## On Mova

- [Trees and pragmatics of «react» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/react/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«react» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/react.html) on Mova free.