DICT.TW Dictionary Taiwan

 in·ter·reg·num /ˌɪntəˈrɛgnəm/
 空位期間,空白期間,中斷

 In·ter·reg·num n.; pl. Interregnums
 1. The time during which a throne is vacant between the death or abdication of a sovereign and the accession of his successor.
 2. Any period during which, for any cause, the executive branch of a government is suspended or interrupted.
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 interregnum
      n : the time between two reigns, governments, etc.
      [also: interregna (pl)]