sclero-, scler-

(Greek: skleros tough, toughen; hard, hardening; dry up)

scleroderma
sclerodermatous
sclerodermic
sclerogen
sclerogenic
sclerogenous
scleroid
scleroma
scleromalacia
Degenerative thinning of the sclera, occurring in persons with rheumatoid arthritis and other collagen disorders.
sclerometer
scleronychia (s) (noun), scleronychias (pl)
The hardening and thickening of the finger and toe nails.
sclerophyll
sclerophyllous
sclerophylly
sclerose