sclero-

1. a combining form meaning “hard,” used with this meaning, and as a combining form of sclera, in the formation of compound words: sclerometer.

combining form

1. indicating hardnesssclerosis
2. of or relating to the sclerasclerotomy

before vowels scler-, word-forming element meaning “hard,” from Latinized form of Greek sklero-, comb. form of skleros “hard,” related to skellein “to dry up, parch,” from PIE *skle-ro-, from root *skele- “to parch, wither.” pref.

1. Hard:scleredema.
2. Hardness:sclerogenous.
3. Sclera:scleritis.