- Enter a word for the dictionary definition.
From The Collaborative International Dictionary of English v.0.48:
Nullification \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. [1913 Webster] 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. [1913 Webster]