arcus

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[edit] English

Shelf cloud, a type of arcus

[edit] Etymology

From Latin arcus.

[edit] Noun

Singular
arcus

Plural
arcus

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, plural sometimes arci) An arc-shaped band of thickened sexine extending between two apertures on a pollen grain or spore

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[edit] Anagrams



[edit] Latin

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[edit] Etymology

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< PIE *arkw-, "bow, arrow". The English word arrow is a cognate.

[edit] Pronunciation

[edit] Noun

arcus (genitive arcūs); m, fourth declension

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

[edit] Inflection

Number Singular Plural
nominative arcus arcūs
genitive arcūs arcuum
dative arcuī arcibus
accusative arcum arcūs
ablative arcū arcibus
vocative arcus arcūs

[edit] Derived terms

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[edit] See also