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Meaning of collimator

col•li•ma•tor

Pronunciation: (kol'u-mā"tur), [key]
— n.
    1. a fixed telescope for use in collimating other instruments.
    2. an optical system that transmits parallel rays of light, as the receiving lens or telescope of a spectroscope.
  1. a device for producing a beam of particles in which the paths of all the particles are parallel.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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