exit pupil: Meaning and Definition of

ex'it pu"pil

Pronunciation: [key]
— Optics. Optics.
  1. the ridge of the entrance pupil of an optical system, indicating the place where the pupil of the eye should be placed to view the object. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.