polyhedron
n.
1560s, from Latinized form of Greek polyedron, neuter of adjective polyedros "having many bases or sides," from polys "many" (see poly-) + hedra "seat, base, chair, face of a geometric solid," from PIE root *sed- (1) "to sit" (see sedentary).
〔李〕n.多面体 [poly- =many] ←-hedron [GK] =a solid figure having...sides表示“⋯面体”