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Definition of Reaction
1. Noun. (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"
Exact synonyms: Chemical Reaction
Category relationships: Chemical Science, Chemistry
Specialized synonyms: Addition Reaction, Aldol Reaction, Chain Reaction, Chemical Equilibrium, Equilibrium, Chemical Decomposition Reaction, Decomposition, Decomposition Reaction, Displacement, Displacement Reaction, Double Decomposition, Double Decomposition Reaction, Metathesis, Elimination Reaction, Endothermic Reaction, Exothermic Reaction, Hydrolysis, Neutralisation, Neutralisation Reaction, Neutralization, Neutralization Reaction, Oxidation, Oxidisation, Oxidization, Oxidation-reduction, Oxidoreduction, Redox, Photochemical Reaction, Reducing, Reduction, Saponification
Generic synonyms: Chemical Action, Chemical Change, Chemical Process
Derivative terms: React
Category relationships: Chemical Science, Chemistry
Specialized synonyms: Addition Reaction, Aldol Reaction, Chain Reaction, Chemical Equilibrium, Equilibrium, Chemical Decomposition Reaction, Decomposition, Decomposition Reaction, Displacement, Displacement Reaction, Double Decomposition, Double Decomposition Reaction, Metathesis, Elimination Reaction, Endothermic Reaction, Exothermic Reaction, Hydrolysis, Neutralisation, Neutralisation Reaction, Neutralization, Neutralization Reaction, Oxidation, Oxidisation, Oxidization, Oxidation-reduction, Oxidoreduction, Redox, Photochemical Reaction, Reducing, Reduction, Saponification
Generic synonyms: Chemical Action, Chemical Change, Chemical Process
Derivative terms: React
2. Noun. An idea evoked by some experience. "His reaction to the news was to start planning what to do"
3. Noun. A bodily process occurring due to the effect of some antecedent stimulus or agent. "His responses have slowed with age"
Exact synonyms: Response
Specialized synonyms: Automatism, Rebound, Overreaction, Electrical Skin Response, Electrodermal Response, Fere Phenomenon, Galvanic Skin Response, Gsr, Psychogalvanic Response, Tarchanoff Phenomenon, Immune Reaction, Immune Response, Immunologic Response, Tropism, Taxis, Kinesis, Double Take, Inborn Reflex, Innate Reflex, Instinctive Reflex, Physiological Reaction, Reflex, Reflex Action, Reflex Response, Unconditioned Reflex, Learned Reaction, Learned Response, Passage, Passing, Answer, Transfusion Reaction
Generic synonyms: Activity, Bodily Function, Bodily Process, Body Process
Derivative terms: React
Specialized synonyms: Automatism, Rebound, Overreaction, Electrical Skin Response, Electrodermal Response, Fere Phenomenon, Galvanic Skin Response, Gsr, Psychogalvanic Response, Tarchanoff Phenomenon, Immune Reaction, Immune Response, Immunologic Response, Tropism, Taxis, Kinesis, Double Take, Inborn Reflex, Innate Reflex, Instinctive Reflex, Physiological Reaction, Reflex, Reflex Action, Reflex Response, Unconditioned Reflex, Learned Reaction, Learned Response, Passage, Passing, Answer, Transfusion Reaction
Generic synonyms: Activity, Bodily Function, Bodily Process, Body Process
Derivative terms: React
4. Noun. (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"
5. Noun. A response that reveals a person's feelings or attitude. "John feared his mother's reaction when she saw the broken lamp"
6. Noun. Extreme conservatism in political or social matters. "The forces of reaction carried the election"
7. Noun. Doing something in opposition to another way of doing it that you don't like. "His style of painting was a reaction against cubism"
Definition of Reaction
1. n. Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action.
2. n. A regular or characteristic response to a stimulation of the nerves.
Definition of Reaction
1. the act of reacting [n -S]
Medical Definition of Reaction
1. Standard method for identifying Clostridium perfringens. When grown on agar containg egg yolk, an opalescent halo is formed around colonies that produce _ toxin (lecithinase). This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Reaction
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