Reaction - definition, pronunciation, transcription

Amer.  |riˈækʃn|  American pronunciation of the word reaction
Brit.  |rɪˈakʃ(ə)n|  British pronunciation of the word reaction


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


Their reaction to the news was positive.

When I told him what happened, his immediate reaction was one of shock.

The announcement produced an angry reaction from most of the people at the meeting.

My first reaction when I met him was not to trust him.

There hasn't yet been much reaction to the announcement.

There has been strong reaction against the government's policies.

A good driver has quick reactions.

The speed of his reactions saved his life.

The forces of reaction made the reform difficult.

The reaction of boron trichloride with an alcohol is quite violent.

What was Jeff's reaction when you told him about the job?

The news brought an angry reaction from unions.

His first reaction was to deny everything.

My gut reaction was not to trust him.

There were mixed reactions (=different people reacting in different ways) to the strike.

Word forms

singular: reaction
plural: reactions
See also:  WebsterWiktionaryLongman