catopter

Etymology
.

Noun

 * 1)  A reflecting optical glass or instrument; a mirror.
 * 2) 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) An Ancient Greek anal dilator or speculum.
 * 1) 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.
 * 2) An Ancient Greek anal dilator or speculum.
 * 1) An Ancient Greek anal dilator or speculum.
 * 1) An Ancient Greek anal dilator or speculum.
 * 1) An Ancient Greek anal dilator or speculum.
 * 1) An Ancient Greek anal dilator or speculum.