(1):

(a.) Hard; firm; indurated; - applied especially in anatomy to the firm outer coat of the eyeball, which is often cartilaginous and sometimes bony.

(2):

(a.) Affected with sclerosis; sclerosed.

(3):

(n.) The sclerotic coat of the eye. See Illust. of Eye (d).

(4):

(a.) Of or pertaining to the sclerotic coat of the eye; sclerotical.

(5):

(a.) Pertaining to, or designating, an acid obtained from ergot or the sclerotium of a fungus growing on rye.