nullification

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the states'-rights doctrine that a state can refuse to recognize or to enforce a federal law passed by the United States Congress
• Derivationally related forms:
nullify
• Hypernyms:
states' rights
2. the act of nullifying;
making null and void;
counteracting or overriding the effect or force of something
• Syn:
override
• Derivationally related forms:
override (for: override), nullify
• Hypernyms:
change of state
• Hyponyms:
cancellation, vitiation, neutralization, neutralisation, counteraction