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.

plural of reaction

Of or pertaining to a reaction (in any sense)

(politics) Synonym of reactionaryism

A process of alternating vasoconstriction and vasodilation in extremities exposed to cold.

Synonym of hunting reaction

plural of Lewis reaction

plural of Mannich reaction

fuel for nuclear energy

(military, euphemistic) The bombing of enemy targets, ostensibly in self-defense.