COLLIMATOR
“COLLIMATOR” is a valid word.
14
Scrabble points
18
Words with Friends
10
letters
Definition
noun
- a small telescope attached to a large telescope to use in setting the line of the larger one
- optical device consisting of a tube containing a convex achromatic lens at one end and a slit at the other with the slit at the focus of the lens; light rays leave the slit as a parallel beam