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Elementary Dictionary
       

re·ac·tion

reaction

 
 
pronunciation:
ri aek shn
features:
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part of speech: noun
definition 1: A reaction is a feeling or action that comes immediately after something else and is caused by it. When some people suddenly see a big spider, their reaction is to scream or jump away. When someone touches a poisonous plant, their skin's reaction is usually to become itchy, very hot, or painful.
Kevin had a bad reaction to the medicine. He got a terrible rash after he took it, so his mom called the doctor.Gabby's first reaction to her brother falling in the pool was worry, but after she saw that he was okay and laughing, she laughed too.
synonyms:
response
definition 2: If a change happens when chemicals are combined, it is called a "reaction."
When a second chemical was added to the first, there was a reaction, and the substance turned blue.
derivations: reactional (adj.), reactionally (adv.)
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