Final answer:
A synonym for stereotomy could be stonecutting, and the word's language of origin is Greek.
Step-by-step explanation:
Using the context of the sentence to find a synonym for stereotomy, it requires understanding that stereotomy is the art or science of cutting three-dimensional solids into particular shapes. A closely related synonym, considering the domain in which the term is often used (architecture and stone-cutting), could be stonecutting itself. The language of origin for the word "stereotomy" is Greek, from the roots "stereo-" meaning solid and "-tomy" from "temnein" meaning to cut.