n.; pl. E. Polyhedrons. L. Polyhedra [ NL., fr. Gr. &unr_; with many seats or sides; poly`s many + &unr_; a seat or side: cf. F. polyèdre. ] 1. (Geom.) A body or solid contained by many sides or planes. [ 1913 Webster ]
2. (Opt.) A polyscope, or multiplying glass. [ 1913 Webster ]