arcus
Definition from Wiktionary, a free dictionary
Contents |
[edit] English
[edit] Etymology
[edit] Noun
|
Singular |
Plural |
arcus (plural arcus)
- (medicine) A white band of cholesterol that forms at the edge of the cornea
- (meteorology) A low, horizontal cloud typically forming at the leading edge of thunderstorm outflow
- (entomology) An elastic band around the base of the arolium, a pad at the end of the leg of certain insects
- (palynology, plural sometimes arci) An arc-shaped band of thickened sexine extending between two apertures on a pollen grain or spore
[edit] Related terms
[edit] Anagrams
[edit] Latin
[edit] Etymology
< PIE *arkw-, "bow, arrow". The English word arrow is a cognate.
[edit] Pronunciation
[edit] Noun
arcus (genitive arcūs); m, fourth declension
[edit] Inflection
| Number | Singular | Plural |
|---|---|---|
| nominative | arcus | arcūs |
| genitive | arcūs | arcuum |
| dative | arcuī | arcibus |
| accusative | arcum | arcūs |
| ablative | arcū | arcibus |
| vocative | arcus | arcūs |