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]