limbus

/ˈlɪmbəs/
noun
  1. The border or edge of a body part, especially the edge of the cornea of the eye where it meets the sclera.
    • In anatomy class, we studied the limbus as the transition zone between the cornea and the white of the eye.
    • Contact lenses should not extend beyond the limbus to avoid irritation.
    • The doctor examined the limbus of the patient's eye for signs of infection.
  2. A border or margin in general, especially in botany or anatomy.
    • The limbus of the fossil shell showed a distinct ridge.
    • The artist painted a thin limbus of gold around the edge of the frame.
    • The limbus of the leaf was slightly curled under.
Synonyms
What does "limbus" mean? | whatsthatwordmean | whatsthatwordmean