· (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"

Synonym(s): chemical_reaction

Hypernym(s): chemical_process, chemical_change, chemical_action

· an idea evoked by some experience; "his reaction to the news was to start planning what to do"

Hypernym(s): idea, thought

· 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"

Synonym(s): response

Hypernym(s): bodily_process, body_process, bodily_function, activity

· (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"

Hypernym(s): force

· 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"

Hypernym(s): response

· extreme conservatism in political or social matters; "the forces of reaction carried the election"

Hypernym(s): conservatism, conservativism

· doing something in opposition to another way of doing it that you don't like; "his style of painting was a reaction against cubism"

Hypernym(s): resistance, opposition