nullification

Nul`li*fi*ca"tion, n. Etym: [L. nullificatio contempt. See Nullify.] Defn: 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.

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