ˌnələfə̇ˈkāshən noun
( -s )
Etymology: Late Latin nullification-, nullificatio, from nullificatus (past participle of nullificare to nullify) + Latin -ion-, -io -ion
1. : the act of nullifying or the state of being nullified
2. : the action of a state of impeding or attempting to prevent the operation and enforcement within its territory of a law of the United States
• nul·li·fi·ca·tion·ist -sh(ə)nə̇st noun -s