- [noun] a response that reveals a person's feelings or attitude; "he was pleased by the audience's reaction to his performance"; "John feared his mother's reaction when she saw the broken lamp"
- [noun] 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"
- [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"
- [noun] an idea evoked by some experience; "his reaction to the news was to start planning what to do"
- [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"
- [noun] extreme conservatism in political or social matters; "the forces of reaction carried the election"
- [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"
galvanic skin response, GSR, psychogalvanic response, electrodermal response, electrical skin response, Fere phenomenon, Tarchanoff phenomenon
immune response, immune reaction, immunologic response
- double take
reflex, instinctive reflex, innate reflex, inborn reflex, unconditioned reflex, physiological reaction
learned reaction, learned response
- transfusion reaction
- addition reaction
- aldol reaction
- chain reaction
chemical equilibrium, equilibrium
decomposition, decomposition reaction
displacement, displacement reaction
double decomposition, double decomposition reaction, metathesis
- elimination reaction
- endothermic reaction
- exothermic reaction
neutralization, neutralisation, neutralization reaction, neutralisation reaction
oxidation, oxidization, oxidisation
oxidation-reduction, oxidoreduction, redox
- photochemical reaction