catopter

Meaning

1. noun A reflecting optical glass or instrument; a mirror.
2. noun A unit of measure of the converging power of a curved mirror, equal to the reciprocal of the focal length in meters; a diopter applied to a curved reflective surface as opposed to a lens.
3. noun An Ancient Greek anal dilator or speculum.

Similar words

catoptron catoptrics phacoidoscope orthiconoscope copter cat-eye occularium cyclops cat's-eye cymatoscope