polyhedron

Etymology

From New Latin polyedron, from Ancient Greek πολύεδρος (polúedros, “having many seats”), from πολυ- (polu-, “many”) + ἕδρα (hédra, “seat”); compare French polyèdre. By surface analysis, poly- + -hedron.

noun

  1. (geometry) A solid figure with many flat faces and straight edges.
  2. (optics) A polyscope, or multiplying glass.

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