arcus
- Noun. (medicine) A white band of cholesterol that forms at the edge of the cornea.
- Noun. (meteorology) A low, horizontal cloud typically forming at the leading edge of thunderstorm outflow.
- Noun. (entomology) An elastic band around the base of the arolium, a pad at the end of the leg of certain insects.
- Noun. (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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This entry was last updated on RefTopia from its source on 3/20/2012.