REACTION

Definition

1. noun (chemistry) a process in which one or more substances are changed into others. — synonyms: chemical_reaction
2. noun an idea evoked by some experience.
3. noun a bodily process occurring due to the effect of some antecedent stimulus or agent. — synonyms: response
4. noun (mechanics) the equal and opposite force that is produced when any force is applied to a body.
5. noun a response that reveals a person's feelings or attitude.
6. noun extreme conservatism in political or social matters.
7. noun doing something in opposition to another way of doing it that you don't like.