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From Latin dēditiō.



  1. (historical) In medieval Europe, an act of ritualized submission and request for mercy, performed before a monarch or other feudal lord.
    • 2002, Sverre Bagge, Kings, Politics, and the Right Order of the World in German Historiography c. 950–1150, p. 164:
      A deditio implied a clear duty for the victorious party to treat his former enemy leniently, and the conditions for surrender were often arranged in advance.
    • 2016, Peter H. Wilson, The Holy Roman Empire, Penguin 2017, p. 617:
      The ritual of deditio was ostentatiously emotional, with tears of contrition both signalling submission and calculated to encourage a formal pardon from a king who risked losing face by failing to show clemency.




From dēdō (to give away, to give up) +‎ -tiō (noun-forming suffix).


dēditiō f (genitive dēditiōnis); third declension

  1. a giving up, surrender, capitulation
    Synonym: datiō


Third-declension noun.

Case Singular Plural
Nominative dēditiō dēditiōnēs
Genitive dēditiōnis dēditiōnum
Dative dēditiōnī dēditiōnibus
Accusative dēditiōnem dēditiōnēs
Ablative dēditiōne dēditiōnibus
Vocative dēditiō dēditiōnēs


  • deditio”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • deditio”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • deditio in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette
  • Carl Meißner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • after capitulation: deditione facta (Sall. Iug. 26)
    • to reduce a country to subjection to oneself: populum in deditionem venire cogere
    • to accept the submission of a people: populum in deditionem accipere
    • to make one's submission to some one: in deditionem venire (without alicui)
  • deditio”, in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
  • deditio”, in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin