hard; firm; indurated; -- applied especially in anatomy to the firm outer coat of the eyeball, which is often cartilaginous and sometimes bony.-of or pertaining to the sclerotic coat of the eye; sclerotical.-affected with sclerosis; sclerosed.-the sclerotic coat of the eye. see illust. of eye (d).-pertaining to, or designating, an acid obtained from ergot or the sclerotium of a fungus growing on rye.