\Chro"ma*trope\, n. [Gr. ? color + ? turn, rotation,
? to turn.]
1. (Physics) An instrument for exhibiting certain chromatic
   effects of light (depending upon the persistence of vision
   and mixture of colors) by means of rapidly rotating disks
   variously colored.
2. A device in a magic lantern or stereopticon to produce
   kaleidoscopic effects.