Definition
The limbus refers to a border or edge, often marking a transition between two different tissues or structures. In anatomy, it commonly refers to the corneal limbus, the border between the cornea and the sclera (the white part of the eye). Think of it as the 'shoreline' where the clear cornea meets the white sclera. In other contexts, 'limbus' can describe any similar transitional zone. It represents a boundary, a place where things change.