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From cognitus, perfect passive participle of cognōscō (learn, know).



cognitiō f (genitive cognitiōnis); third declension

  1. examination, inquiry, investigation
  2. learning, study (acquisition of knowledge)
  3. knowledge


Third declension.

Case Singular Plural
Nominative cognitiō cognitiōnēs
Genitive cognitiōnis cognitiōnum
Dative cognitiōnī cognitiōnibus
Accusative cognitiōnem cognitiōnēs
Ablative cognitiōne cognitiōnibus
Vocative cognitiō cognitiōnēs


See also[edit]


  • cognitio in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • cognitio in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • cognitio in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
  • cognitio in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to be well-informed, erudite: multarum rerum cognitione imbutum esse (opp. litterarum or eruditionis expertem esse or [rerum] rudem esse)
    • to have innate ideas of the Godhead; to believe in the Deity by intuition: insitas (innatas) dei cognitiones habere (N. D. 1. 17. 44)