Source : Webster's Revised Unabridged Dictionary (1913)

Stereobate \Ste"re*o*bate\, n. [Gr. stereo`s solid + ? that
   treads or covers, akin to ? base; cf. F. st['e]r['e]obate.]
   (Arch.)
   The lower part or basement of a building or pedestal; -- used
   loosely for several different forms of basement.