Nul`li*fi*ca"tion (?), n. [L. nullificatio contempt. 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.
© Webster 1913.