Focus on the pronunciation of reaction
English definition of “reaction”
/riˈæk·ʃən/ n [C]
› behavior, a feeling, or an action that is a direct result of something else: My initial reaction was to call off the party. Senator, what is your reaction to the proposal to cut Medicare benefits? › A reaction is also a change that opposes a previous opinion or behavior: His art is a reaction against photographic realism. › biology A reaction can also be an unpleasant effect on the body resulting from something eaten or taken, such as a drug. › chemistry A chemical reaction is the change that happens when two or more substances are mixed with each other.