nounpl. -·ras or -·rae
the tough, fibrous, white membrane covering all of the eyeball except the area covered by the cornea
Origin of scleraModern Latin from Classical Greek skl?ros, hard from Indo-European base an unverified form (s)kel-, to dry out from source shallow
The tough white fibrous outer envelope of tissue covering all of the eyeball except the cornea. Also called sclerotic . Also called sclerotic coat .
Origin of scleraNew Latin from Greek feminine of sklēros hard
(plural scleras or sclerae or sclerÃ¦)
Borrowing from Ancient Greek ÏƒÎºÎ»Î·ÏÏŒÏ‚ (sklÄ“ros) ("hard").