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Definition of reactivity noun from the Oxford Advanced Learner's Dictionary

reactivity

noun

/ˌriːækˈtɪvəti/

/ˌriːækˈtɪvəti/

(chemistry)

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the degree to which something reacts, or is likely to react
- Oxygen has high reactivity.
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See reactivity in the Oxford Advanced American DictionarySee reactivity in the Oxford Learner's Dictionary of Academic English

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