D defs.my
Entry 1 sense Webster, 1913

Catoptrics

· Ca·top·trics · IPA
01 n. That part of optics which explains the properties and phenomena of reflected light, and particularly that which is reflected from mirrors o…
  1. 1.
    That part of optics which explains the properties and phenomena of reflected light, and particularly that which is reflected from mirrors or polished bodies; -- formerly called anacamptics.(Physics) Also: anacamptics