arcus senilis: Meaning and Definition of

ar•cus se•ni•lis

Pronunciation: (är'kus su-nī'lis), [key]
— Ophthalm. Ophthalm.
  1. the appearance of a yellowish-gray lipid ring around the margin of the cornea, occurring in aging persons.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.