[skleer-uh] 
| a dense, white, fibrous membrane that, with the cornea, forms the external covering of the eyeball. |
| scle·ra (sklîr'ə) n. The tough white fibrous outer envelope of tissue covering all of the eyeball except the cornea. Also called sclerotic, sclerotic coat. [New Latin, from Greek, feminine of sklēros, hard.] scle'ral adj. |
sclera scle·ra (sklēr'ə)
n. pl. scle·ras or scle·rae (sklēr'ē)
The tough fibrous tunic forming the outer envelope of the eye and covering all of the eyeball except the cornea; the white of the eye. Also called sclerotic.