Definition of REACTION

reaction

Plural: reactions

Noun

  • A response to a stimulus, event, or situation.
  • (chemistry) a process in which one or more substances are changed into others
    • "there was a chemical reaction of the lime with the ground water"
  • an idea evoked by some experience
    • "his reaction to the news was to start planning what to do"
  • a bodily process occurring due to the effect of some antecedent stimulus or agent
    • "a bad reaction to the medicine"
  • (mechanics) the equal and opposite force that is produced when any force is applied to a body
    • "every action has an equal and opposite reaction"
  • a response that reveals a person's feelings or attitude
    • "he was pleased by the audience's reaction to his performance"
    • "John feared his mother's reaction when she saw the broken lamp"
  • extreme conservatism in political or social matters
    • "the forces of reaction carried the election"
  • doing something in opposition to another way of doing it that you don't like
    • "his style of painting was a reaction against cubism"
  • An action or statement in response to a stimulus or other event.
  • A transformation in which one or more substances is converted into another by combination or decomposition.
  • Reactionary politics; a period in which reactionary thought or politics is resurgent or dominant.
  • Unpurposeful behavior.
  • An icon or emoji appended to a posted message by a user to express their feeling about it.

Examples

  • Her REACTION to my seven-letter word was a gasp, followed by a quick check of the dictionary.
  • In this reaction, the acid and base will neutralize each other, producing a salt.
  • The announcement of the verdict brought a violent reaction.
  • When I last tried to eat strawberries I had a terrible allergic reaction.
  • You were in the courtroom. What is your reaction?

Origin / Etymology

Inherited from Middle English reaccion, from Old French reaction, from Latin reāctiō, from the verb reagō, from re- (“again”) + agō (“to act”); more at re-, action; equivalent to react + -ion.

Synonyms

chemical reaction, response, reax, rxn

Scrabble Score: 10

reaction: valid Scrabble (US) TWL Word
reaction: valid Scrabble Word in Merriam-Webster MW Dictionary
reaction: valid Scrabble Word in International Collins CSW Dictionary

Words With Friends Score: 12

reaction: valid Words With Friends Word