arcus

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English

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Shelf cloud, a type of arcus

Etymology

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Borrowed from Latin arcus. Doublet of arc and arco. Distantly related to arrow.

Noun

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arcus (plural arcus)

  1. (medicine) A white band of cholesterol that forms at the edge of the cornea
  2. (meteorology) A low, horizontal cloud typically forming at the leading edge of thunderstorm outflow
  3. (entomology) An elastic band around the base of the arolium, a pad at the end of the leg of certain insects
  4. (palynology) An arc-shaped band of thickened sexine extending between two apertures on a pollen grain or spore
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Translations

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Anagrams

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Latin

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Latin Wikipedia has an article on:
Wikipedia la

Etymology

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    From Proto-Italic *arkuos (bow), from Proto-Indo-European *h₂erkʷos (bow, arrow). Cognate to Old English earh, whence English arrow, as well as Proto-Slavic *orkyta (willow) and Ancient Greek ἄρκευθος (árkeuthos, juniper), owing to juniper and willow twigs being used to make bows due to their flexibility.[1]

    Pronunciation

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    Noun

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    arcus m (genitive arcūs); fourth declension

    1. arc, arch
    2. bow (arc-shaped weapon used for archery)
    3. rainbow

    Declension

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    Fourth-declension noun (dative/ablative plural in -ubus).

    Case Singular Plural
    Nominative arcus arcūs
    Genitive arcūs arcuum
    Dative arcuī arcubus
    Accusative arcum arcūs
    Ablative arcū arcubus
    Vocative arcus arcūs

    Derived terms

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    Descendants

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    • Aromanian: arcu
    • English: arch
    • Esperanto: arko
    • Old French: arc
    • Padanian:
    • Romansch: artg, arch
    • Middle Low German: ark
      • Low German: ark
        • Norwegian Bokmål: ark
    • Occitano-Romance:
    • Romanian: arc
    • Russian: а́рка f (árka)
    • Sardinian: alcu, arcu
    • Italo-Dalmatian:
    • Ibero-Romance:

    See also

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    References

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    • arcus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
    • arcus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
    • arcus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
    • arcus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
    • arcus”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
    • arcus in Ramminger, Johann (2016 July 16 (last accessed)) Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700[1], pre-publication website, 2005-2016
    • arcus”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin
    1. ^ De Vaan, Michiel (2008) “arcus”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, page 52