SCLER- Meaning of SCLER- in English [scler-] or sclero- comb form [NL, fr. Gk skler-, sklero-, fr. skleros--more at skeleton] 1: hard "sclerite" "scleroderma" 2: hardness "sclerometer" Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012