• IPA: /ɹiˈækʃən/

reaction (plural reactions)

  1. An action or statement in response to a stimulus or other event
    The announcement of the verdict brought a violent reaction.
    You were in the courtroom. What is your reaction?
    When I last tried to eat strawberries I had a terrible allergic reaction.
  2. (chemistry) A transformation in which one or more substances is converted into another by combination or decomposition
    In this reaction, the acid and base will neutralize each other, producing a salt.
  3. (politics) Reactionary politics; a period in which reactionary thought or politics is resurgent or dominant.
  • reax journalism jargon
  • rxn abbreviation
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