catopter

反射面

词形变化

catopters 复数 catopters

释义与例句

n.
  1. 1.

    A reflecting optical glass or instrument; a mirror.

    废旧
  2. 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. 3.

    An Ancient Greek anal dilator or speculum.

词源

Ancient Greek κάτοπτρον (kátoptron, “mirror”).

来源：wiktionary