Nŭl'li-fi-cā'tion, n.

n. [Lat. nullificatio, Fr. nullification. See NULLIFY.] The act of nullifying; a rendering void and of no effect, or of no legal effect.

Right of nullification (U. S. Hist.), the right claimed in behalf of a state to nullify or make void, by its sovereign act or decree, an enactment of the general government which it deems unconstitutional.