Definitions of reactivity
  1. noun
    responsive to stimulation
    synonyms: responsiveness
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    excitability, irritability
    excessive sensitivity of an organ or body part
    type of:
    sensibility, sensitiveness, sensitivity
    (physiology) responsiveness to external stimuli; the faculty of sensation
  2. noun
    ready susceptibility to chemical change
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    type of:
    susceptibility, susceptibleness
    the state of being susceptible; easily affected
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