Try Our Apps
Dictionary.com

follow Dictionary.com

Avoid these words. Seriously.

entrance pupil

noun, Optics.
1.
the image of the aperture viewed from the objective of an optical system limiting the rays that enter the system.
Compare exit pupil.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
Examples from the Web for entrance pupil
Historical Examples

Word of the Day

Nearby words for entrance pupil

Word Value for entrance

10
13
Scrabble Words With Friends