scleraWiktionary 原文演变路径（由近及远）英语借自 ←新拉丁语 sclera源自 ←古希腊语 σκληρός “hard”词源说明Borrowed from New Latin sclera, from Ancient Greek σκληρός (sklērós, “hard”).释义（英文）名词 Noun(anatomy) The white of the eye; the tough outer coat of the eye that covers the eyeball except for the cornea.词族派生词（4）scleralscleritisepiscleracorneosclera相关词（2）sclero-scleralization