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Definition of reactive adjective from the Oxford Advanced Learner's Dictionary

reactive

adjective
 
/riˈæktɪv/
 
/riˈæktɪv/
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  1. (formal) showing a reaction or response
    • The police presented a reactive rather than preventive strategy against crime.
    compare proactiveTopics Change, cause and effectc2
  2. (chemistry) tending to show chemical change when mixed with another substance
    • highly reactive substances
    opposite unreactive
See reactive in the Oxford Advanced American DictionarySee reactive in the Oxford Learner's Dictionary of Academic English
dizzy
adjective
 
 
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