Meaning of reaction
Definition of reaction
(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"
a bodily process occurring due to the effect of some antecedent stimulus or agent; "a bad reaction to the medicine"; "his responses have slowed with age"
(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"
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"
doing something in opposition to another way of doing it that you don't like; "his style of painting was a reaction against cubism"