DICT.TW Dictionary Taiwan

 nul·li·ty /ˈnʌləti/
 無效,無效的行為,無效的證書

 Nul·li·ty n.; pl. Nullities.
 1. The quality or state of being null; nothingness; want of efficacy or force.
 2. Law Nonexistence; as, a decree of nullity of marriage is a decree that no legal marriage exists.
 3. That which is null.
    Was it not absurd to say that the convention was supreme in the state, and yet a nullity?   --Macaulay.
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 nullity
      n : the state of nonexistence [syn: nothingness, void]