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See also: Glaucus


two glaucuses Glaucus atlanticus (left) and Glaucus marginatus


From Ancient Greek γλαυκός (glaukós, blue-green, blue-grey).


glaucus (plural glaucuses)

  1. Any member of the genus Glaucus of nudibranchiate mollusks, found in the warmer latitudes, swimming in the open sea, beautifully colored with blue and silvery white.
  2. Citrus glauca, the desert lime, a thorny shrub species endemic to semi-arid regions of Australia.
    • 1833, Charles Sturt, Two Expeditions into the Interior of Southern Australia, Complete[1]:
      This pass is extremely abrupt, and is covered with glaucus, the low scrub I have noticed as common to the sand-stone formation.





Etymology 1[edit]

From Ancient Greek γλαυκός (glaukós, blue-green, blue-grey).


glaucus (feminine glauca, neuter glaucum); first/second declension

  1. bright, sparkling, gleaming, grayish

First/second declension.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative glaucus glauca glaucum glaucī glaucae glauca
Genitive glaucī glaucae glaucī glaucōrum glaucārum glaucōrum
Dative glaucō glaucae glaucō glaucīs glaucīs glaucīs
Accusative glaucum glaucam glaucum glaucōs glaucās glauca
Ablative glaucō glaucā glaucō glaucīs glaucīs glaucīs
Vocative glauce glauca glaucum glaucī glaucae glauca
Derived terms[edit]
Related terms[edit]

Etymology 2[edit]

From Ancient Greek γλαῦκος (glaûkos, an edible grey fish).


glaucus m (genitive glaucī); second declension

  1. (Mediaeval Latin) a bluish-grey colored fish of uncertain identity, perhaps the derbio

Second declension.

Case Singular Plural
Nominative glaucus glaucī
Genitive glaucī glaucōrum
Dative glaucō glaucīs
Accusative glaucum glaucōs
Ablative glaucō glaucīs
Vocative glauce glaucī


  • glaucus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • glaucus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • glaucus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
  • glaucus in The Perseus Project (1999) Perseus Encyclopedia[2]
  • glaucus in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
  • glaucus in William Smith, editor (1848) A Dictionary of Greek Biography and Mythology, London: John Murray
  • glaucus in William Smith, editor (1854, 1857) A Dictionary of Greek and Roman Geography, volume 1 & 2, London: Walton and Maberly