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Etymology 1[edit]

From olfaciō (to smell, scent) +‎ -tus (action noun suffix).


olfactus m (genitive olfactūs); fourth declension

  1. (literally) an act of smelling, a smell
  2. (transferred sense) the sense of smell
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Fourth-declension noun.

Case Singular Plural
Nominative olfactus olfactūs
Genitive olfactūs olfactuum
Dative olfactuī olfactibus
Accusative olfactum olfactūs
Ablative olfactū olfactibus
Vocative olfactus olfactūs

Etymology 2[edit]

Perfect passive participle of olfaciō (to smell, scent).


olfactus (feminine olfacta, neuter olfactum); first/second-declension participle

  1. smelling, scenting

First/second-declension adjective.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative olfactus olfacta olfactum olfactī olfactae olfacta
Genitive olfactī olfactae olfactī olfactōrum olfactārum olfactōrum
Dative olfactō olfactō olfactīs
Accusative olfactum olfactam olfactum olfactōs olfactās olfacta
Ablative olfactō olfactā olfactō olfactīs
Vocative olfacte olfacta olfactum olfactī olfactae olfacta


  • olfactus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • olfactus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette