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Adjective: reactive  ree'ak-tiv
  1. Reacting to a stimulus
    "the skin of old persons is less reactive than that of younger persons";
    - responsive
     
  2. (physics) participating readily in reactions
    "sodium is a reactive metal"; "free radicals are very reactive"

See also: activated, excited, labile, oxidisable [Brit], oxidizable, sensitive, thermolabile, unstable

Antonym: unreactive

Encyclopedia: Reactive

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reaction engine
reaction formation
reaction propulsion
reaction time
reaction turbine
reactionary
reactionism
reactionist
reaction-propulsion engine
reactivate
reactive
reactive depression
reactive schizophrenia
reactivity
reactor
read
read between the lines
Read method
Read method of childbirth
read up
read/write head