REACTIVITY
Meaning of REACTIVITY in English
/ ˌriːækˈtɪvɪti; NAmE / adjective
( chemistry ) the degree to which sth reacts, or is likely to react :
Oxygen has high reactivity.
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005