Catoptric is a 9 letter English word. It's valid Words with friends word worth 18 points.
You can make 332 anagrams from letters in catoptric (accioprtt).
1560-70; Greekkatoptrikós, equivalent to kátoptr(on) mirror (kat- cat- + op- see + -tron suffix of instruments) +-ikos -ic; see Examples for catoptric
This optic embodied the first combination of dioptric and catoptric elements in one design (fig. 34). Another classification divides the instruments themselves into three classes: (a) catoptric, (b) dioptric and (c) catadioptric. catoptric, kat-op′trik, adj. relating to catoptrics or vision by reflection. Two methods of lighting have been employed—the catoptric and the Dioptric systems. The floating lights of England are illuminated by means of lamps with metallic reflectors, on what is styled the catoptric system. Until about 1895 the illuminating apparatus used in light-vessels was exclusively of catoptric form, usually consisting of 21 in.
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