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col·li·ma·tor | \ ˈkä-lə-ˌmā-tər 
\
\Definition of collimator
1 : a device for producing a beam of parallel rays (as of light) or for forming an infinitely distant virtual image that can be viewed without parallax
2 : a device for obtaining a beam (as of particles) of limited cross section
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More Definitions for collimator
collimator
nouncol·li·ma·tor | \ ˈkäl-ə-ˌmāt-ər \
\Medical Definition of collimator
: a device for obtaining a beam of radiation (as X-rays) of limited cross section
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Time Traveler for collimator
The first known use of collimator was in 1865
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