"hard coat of the eyeball," 1886, medical Latin, from Greek sklēra (menix) "the hard (membrane)," fem. of sklēros "hard" (see sclero-).
Entries linking to sclera
sclero-
before vowels scler-, word-forming element meaning "hard," from Latinized form of Greek sklēros "hard, harsh," which is related to skellein "to dry up, parch" (from PIE *skle-ro-, from root *skele- "to parch, wither").