arcus
Definition from Wiktionary, the free dictionary
Contents |
English [edit]
Etymology [edit]
Borrowed from Latin arcus.
Noun [edit]
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
Related terms [edit]
Anagrams [edit]
Latin [edit]
Etymology [edit]
From Proto-Indo-European *h₂erkʷo- (“bow, arrow”). Cognate to Old English earh, whence English arrow.
Pronunciation [edit]
Noun [edit]
arcus (genitive arcūs); m, fourth declension
Inflection [edit]
| Number | Singular | Plural |
|---|---|---|
| nominative | arcus | arcūs |
| genitive | arcūs | arcuum |
| dative | arcuī | arcubus |
| accusative | arcum | arcūs |
| ablative | arcū | arcubus |
| vocative | arcus | arcūs |
