collimator

noun
col·​li·​ma·​tor | \ ˈkä-lə-ˌmā-tər How to pronounce collimator (audio) \

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

First Known Use of collimator

1865, in the meaning defined at sense 1

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Time Traveler

The first known use of collimator was in 1865

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Cite this Entry

“Collimator.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/collimator. Accessed 29 January 2020.

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More Definitions for collimator

collimator

noun
col·​li·​ma·​tor | \ ˈkäl-ə-ˌmāt-ər How to pronounce collimator (audio) \

Medical Definition of collimator

: a device for obtaining a beam of radiation (as X-rays) of limited cross section

More from Merriam-Webster on collimator

Britannica.com: Encyclopedia article about collimator

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