An action or statement in response to a stimulus or other event. / (chemistry) A transformation in which one or more substances is converted into another by combination or decomposition.

Of or pertaining to a reaction (in any sense)

(politics) Synonym of reactionaryism

plural of reaction

plural of chemical reaction

plural of mixed reaction

plural of nuclear reaction

(organic chemistry) An organic reaction that converts an alcohol into a variety of functional groups, such as an ester, using triphenylphosphine and an azodicarboxylate.

plural of reaction mechanism

(soccer) The instinctive blocking of the ball by a goalkeeper.