1. A geometrical solid containing many sides or planes: a multiplying glass or lens, consisting of several plane surfaces arranged convexly.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• oolyhedron,
• lolyhedron,
• -olyhedron,
• 0olyhedron,
• pilyhedron,
• pklyhedron,
• pllyhedron,
• pplyhedron,
• p0lyhedron,
• p9lyhedron,
• pokyhedron,
• popyhedron,
• pooyhedron,
• polthedron,
• polghedron,
• polhhedron,
• poluhedron,
• pollyhedron,
• polyherdron,
• Dyhedron

• polyhedral,
• polyhidrosis.

The adjective form of the word "polyhedron" is "polyhedral".