Dictionary Check: collimator
"collimator" is a valid word!
Scrabble
14
points
Words with Friends
18
points
Definition
noun
a small telescope attached to a large telescope to use in setting the line of the larger one
noun
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
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