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1. Dictionary

   reaction

   /rɪˈakʃn/

   noun

   • 1. something done, felt, or thought in response to a situation or event: "my immediate reaction was one of relief" Similar responseanswerreplyrejoinderretortripostefeedbackinformal:comebackclapback
   • ▪ a person's ability to respond physically and mentally to external stimuli: "a skilled driver with quick reactions"
   • ▪ an adverse physiological response to a substance that has been breathed in, ingested, or touched: "such allergic reactions as hay fever and asthma"
   • ▪ a mode of thinking or behaving that is deliberately different from previous modes of thought and behaviour: "the work of these painters was a reaction against Fauvism" Similar backlashcounteractionrecoil
   • ▪ opposition to political or social progress or reform: "the institution is under threat from the forces of reaction" Similar conservatismultra-conservatismthe rightthe right wingthe extreme rightcounter-revolutionrevanchism
   • 2. a chemical process in which substances act mutually on each other and are changed into different substances, or one substance changes into other substances: "a chemical reaction caused by a build-up of particular sodium salts"
   • ▪ an analogous transformation of atomic nuclei or other particles: "reactions between photons and electrically charged atomic particles"
   • 3. a force exerted in opposition to an applied force: "the law of action and reaction"

   Word Origin late 16th century: from re- + action, originally suggested by medieval Latin reactio(n-), from react- ‘done again’ (see react).

   Derivatives

   • 1. reactionist noun

   Scrabble Points: 10

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2. dictionary.cambridge.org › dictionary › englishREACTION | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › english

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   reaction to sth We've seen little market reaction to the latest inflation figures. reaction against sth There was an immediate reaction against the proposed tax increases . (Definition of reaction from the Cambridge Business English Dictionary © Cambridge University Press)

3. www.merriam-webster.com › dictionary › reactionReaction Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › reaction

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   Learn the various meanings and uses of the word reaction, from chemistry to psychology to politics. See synonyms, examples, word history, and related phrases for reaction.

4. www.dictionary.com › browse › reactionREACTION Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › reaction

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   Reaction definition: a reverse movement or tendency; an action in a reverse direction or manner.. See examples of REACTION used in a sentence.

5. dictionary.cambridge.org › dictionary › learner-englishMeaning of reaction – Learner’s Dictionary - Cambridge Dictionary

   dictionary.cambridge.org › dictionary › learner-english

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   My initial reaction was one of anger. It's impossible to gauge what her reaction will be. He was clearly rattled by their angry reaction. What is your reaction to these comments? People have had different reactions to the end of the film.

6. www.vocabulary.com › dictionary › reactionReaction - Definition, Meaning & Synonyms - Vocabulary.com

   www.vocabulary.com › dictionary › reaction

   A reaction is an action taken in response to something. If you're telling your parents that you want to move out, you'll see by their reaction that they're sad about it.

7. www.collinsdictionary.com › dictionary › englishREACTION definition and meaning | Collins English Dictionary

   www.collinsdictionary.com › dictionary › english

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   Your reaction to something that has happened or something that you have experienced is what you feel, say, or do because of it.

8. www.oxfordlearnersdictionaries.com › definition › englishreaction noun - Definition, pictures, pronunciation and usage...

   www.oxfordlearnersdictionaries.com › definition › english

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   Learn the meaning, pronunciation and usage of the word reaction in English. Find out how to use reaction in different contexts, such as events, situations, drugs, science, physics and more.

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