Link Centre Dictionary

reaction

reac·tion

UK/ɹiˈækʃən/ US/riˈækʃʌn/ common

noun

1.

a response that reveals a person''s feelings or attitude

  • “he was pleased by the audience”
  • “;”
  • “s reaction when she saw the broken lamp”
2.

a bodily process occurring due to the effect of some foregoing stimulus or agent

  • “a bad reaction to the medicine”
  • “his responses have slowed with age”
Synonyms
3.

(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”
Synonyms
4.

an idea evoked by some experience

  • “his reaction to the news was to start planning what to do”
5.

doing something in opposition to another way of doing it that you don''t like

  • “his style of painting was a reaction against cubism”
6.

extreme conservatism in political or social matters

  • “the forces of reaction carried the election”
7.

(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”

Origin

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.

Phrases

  • Abderhalden reaction
  • addition reaction
  • alarm reaction
  • alcohol flush reaction
  • Appel reaction
  • Arbuzov reaction
  • Arndt-Eistert reaction
  • Arthus reaction

Related words

Word family

Broader terms

Narrower terms

WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.