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From Latin inter- "between" + the accusative of regnum (which is regnum) meaning "reign", "power" or "kingdom". Literally meaning "between reign" or "between kingdom".



interregnum (plural interregnums or interregna)

  1. The period of time between the end of a sovereign's reign and the accession of another sovereign.
    The Sasanian Interregnum of 628-632
  2. A period of time during which normal executive leadership is suspended or interrupted.
  3. An intermission in any order of succession; any breach of continuity in action or influence.
    • 1835, William Gilmore Simms, The Partisan, Harper, Chapter XIV, page 179:
      This was in that strange pause of the storm which is its most remarkable feature in the South—that singular interregnum of the winds, when, after giving repeated notice of their most terrific action, they seem almost to forget their purpose, and for a few moments appear to slumber in their inactivity.

Derived termsEdit




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  • (Classical) IPA(key): /in.terˈreːɡ.num/, [ɪn̪.t̪ɛrˈreːŋ.n̪ʊ̃ˑ]


interrēgnum n (genitive interrēgnī); second declension

  1. interregnum


Second-declension noun (neuter).

Case Singular Plural
Nominative interrēgnum interrēgna
Genitive interrēgnī interrēgnōrum
Dative interrēgnō interrēgnīs
Accusative interrēgnum interrēgna
Ablative interrēgnō interrēgnīs
Vocative interrēgnum interrēgna


  • Catalan: interregne
  • Italian: interregno
  • Portuguese: interregno
  • Spanish: interregno


  • interregnum in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • interregnum in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • interregnum in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • things seem tending towards an interregnum: res fluit ad interregnum
    • an interregnum ensues: res ad interregnum venit or adducitur
  • interregnum in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers