Noun
The time during which a throne is vacant between the death or abdication of a sovereign and the accession of his successor.
Any period during which, for any cause, the executive branch of a government is suspended or interrupted.
Source: Webster's dictionaryThe crisis consists precisely in the fact that the old is dying and the new cannot be born; in this interregnum a great variety of morbid symptoms appear. Antonio Gramsci
It was not till the kings had been shorn of power and the interregnum of sham democracy had set in, leaving no virile force in the state or the world to resist the money power, that the opportunity for a world-wide plutocratic despotism arrived. Edward Bellamy
After a 20-year period (Great interregnum 1254–1273), the first Habsburg was elected king. Source: Internet
After his death followed the interregnum until 1453; land (as the rest of lands of the Bohemian Crown) was administered by the landfriedens (landfrýdy). Source: Internet
During a four-year interregnum between Lord Deputies from 1629 on, there was an increase in efforts to impose religious conformity on Ireland. Source: Internet
Andropov interregnum Brezhnev died on 10 November 1982. Source: Internet