polygonoscope

== English == === Etymology === From polygon + -o- + -scope. === Noun === polygonoscope (plural polygonoscopes) (obsolete) An arrangement of hinged mirrors for the production of multiple images of an object. === References === John A. Simpson and Edmund S. C. Weiner, editors (1989), “polygonoscope”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, →ISBN.