arcus — English Dictionary

Noun

1. A white band of cholesterol that forms at the edge of the cornea

2. A low, horizontal cloud typically forming at the leading edge of thunderstorm outflow

3. An elastic band around the base of the arolium, a pad at the end of the leg of certain insects

4. An arc-shaped band of thickened sexine extending between two apertures on a pollen grain or spore

Noun

1. a whitish deposit in the shape of an arc that is sometimes seen in the cornea

   Synonyms

   arcus senilis

   Broader terms

   cornea