Sclerobase \Scler"o*base\ (? or ?), n. [Gr. sklhro`s hard + ba`sis base.] (Zo["o]l.) The calcareous or hornlike coral forming the central stem or axis of most compound alcyonarians; -- called also {foot secretion}. See Illust. under {Gorgoniacea}, and {C[oe]nenchyma}. -- {Scler`o*ba"sic}, a.