reaction | ||
1. | [ noun ] a response that reveals a person's feelings or attitude | |
Examples: | "he was pleased by the audience's reaction to his performance" "John feared his mother's reaction when she saw the broken lamp" |
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Related terms: | response react | |
2. | [ noun ] (biology) a bodily process occurring due to the effect of some foregoing stimulus or agent | |
Synonyms: | response | |
Examples: | "a bad reaction to the medicine" "his responses have slowed with age" |
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Related terms: | bodily_process reflex passage learned_reaction rebound tropism immune_response automatism taxis transfusion_reaction electrical_skin_response answer kinesis overreaction double_take react | |
3. | [ noun ] an idea evoked by some experience | |
Examples: | "his reaction to the news was to start planning what to do" |
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Related terms: | idea | |
4. | [ noun ] (chemistry) a process in which one or more substances are changed into others | |
Synonyms: | chemical_reaction | |
Examples: | "there was a chemical reaction of the lime with the ground water" |
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Related terms: | chemical_process oxidation neutralisation reduction decomposition chemical_equilibrium chain_reaction photochemical_reaction endothermic_reaction elimination_reaction displacement double_decomposition exothermic_reaction oxidation-reduction saponification aldol_reaction addition_reaction hydrolysis chemistry | |
5. | [ noun ] doing something in opposition to another way of doing it that you don't like | |
Examples: | "his style of painting was a reaction against cubism" |
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Related terms: | resistance backlash | |
6. | [ noun ] (politics) extreme conservatism in political or social matters | |
Examples: | "the forces of reaction carried the election" |
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Related terms: | conservatism | |
7. | [ noun ] (mechanics) the equal and opposite force that is produced when any force is applied to a body | |
Examples: | "every action has an equal and opposite reaction" |
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Related terms: | force mechanics | |
Similar spelling: |
reactionist reactionism reactionary reactant reactance |