acus

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Latin[edit]

Pronunciation[edit]

Etymology 1[edit]

From Proto-Indo-European *h₂eḱ- (sharp). Related to acuō (sharpen, whet) and aciēs (edge).

Noun[edit]

acus f (genitive acūs); fourth declension

  1. a needle, a pin
  2. bodkin
Inflection[edit]

Fourth declension.

Case Singular Plural
Nominative acus acūs
Genitive acūs acuum
Dative acuī acibus
Accusative acum acūs
Ablative acū acibus
Vocative acus acūs
Derived terms[edit]
Descendants[edit]
  • Italian: ago
  • Romanian: ac
  • Sardinian: àcu
  • Vulgar Latin: *acūcla (see there for further descendants)

Etymology 2[edit]

From Proto-Indo-European *h₂eḱ- (sharp), cognates including agna (ear) and Proto-Germanic *ahaz (ear), Proto-Germanic *aganō, *ahanō (chaff) (> English awn), Ancient Greek ἄχυρον (ákhuron), Greek άχυρο (áchyro, hay).

Noun[edit]

acus n (genitive aceris); third declension

  1. bran
    Synonym: āplūda
Inflection[edit]

Third declension neuter.

Case Singular Plural
Nominative acus acera
Genitive aceris acerum
Dative acerī aceribus
Accusative acus acera
Ablative acere aceribus
Vocative acus acera
Derived terms[edit]

References[edit]

  • Ernout, Alfred; Meillet, Antoine (2001), “acus”, in Dictionnaire étymologique de la langue latine: histoire des mots (in fr), with additions and corrections of André J., 4th edition, Paris: Klincksieck, page 7
  • acus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • acus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • acus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
  • acus in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • you have hit the nail on the head: rem acu tetigisti
  • acus in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
  • acus in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin