Assertion: collimator | /r/HasAspect | 2 senses
Facets:
Source sentences:
text: The noun COLLIMATOR has 2 senses: 1. a small telescope attached to a large telescope to use in setting the line of the larger one 2. 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 Familiarity information: COLLIMATOR used as a noun is rare.