collimator

noun 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

First Known Use of collimator

1865


Medical Dictionary

collimator

noun col·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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