The Collaborative International Dictionary of English v.0.48:

Stereotomy \Ste`re*ot"o*my\, n. [Stereo- + Gr. ? to cut: cf. F.
   st['e]r['e]otomie.]
   The science or art of cutting solids into certain figures or
   sections, as arches, and the like; especially, the art of
   stonecutting.
   [1913 Webster]