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perfectiō f (genitive perfectiōnis); third declension

  1. finishing, completion
  2. perfection


Third declension.

Case Singular Plural
nominative perfectiō perfectiōnēs
genitive perfectiōnis perfectiōnum
dative perfectiōnī perfectiōnibus
accusative perfectiōnem perfectiōnēs
ablative perfectiōne perfectiōnibus
vocative perfectiō perfectiōnēs


  • perfectio in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • perfectio in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • du Cange, Charles (1883), “perfectio”, in G. A. Louis Henschel, Pierre Carpentier, Léopold Favre, editors, Glossarium Mediæ et Infimæ Latinitatis (in Latin), Niort: L. Favre
  • perfectio” in Félix Gaffiot’s Dictionnaire Illustré Latin-Français, Hachette (1934)
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to attain perfection: ad perfectionem, (ad summum) pervenire
    • ideal perfection: absolutio et perfectio (not summa perfectio)
    • to conceive an ideal: singularem quandam perfectionis imaginem animo concipere