Main Entry: en·tro·pi·on

Pronunciation: \en-ˈtrō-pē-ˌän, -pē-ən\

Function: noun

Etymology: New Latin, from en- ²en- + ectropion turning out of the eyelid, from Greek ektropion, from ektrepein to turn out, from ex- out + trepein to turn

Date: circa 1860

: the inversion or turning inward of the border of the eyelid against the eyeball