Nullification
Pronunciation : Nul`li*fi*ca"tion
Part of Speech : n.
Etymology : [L. nullificatio contempt. See Nullify.]
Definition : 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.
Source : Webster's Unabridged Dictionary, 1913