arcus

About 0.13 uses per million words.

Meaning

1. noun A white band of cholesterol that forms at the edge of the cornea
2. noun A low, horizontal cloud typically forming at the leading edge of thunderstorm outflow
3. noun An elastic band around the base of the arolium, a pad at the end of the leg of certain insects
4. noun An arc-shaped band of thickened sexine extending between two apertures on a pollen grain or spore

Similar words

arcus senilis aortae senilis coarc collarette eyecorner cartilege crest ciliary artery watercleft

Often followed by

senilis tendineus palatini marginalis and is aortae branchialis var