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collimator Twit Definition of collimator Share Definition of collimator on Facebook Digg:Definition of collimator! stumble Definition of collimator Bookmark Definition of collimator on Delicious submit Definition of collimator to reddit Bookmark Definition of collimator
noun 
  1. (physics) An optical device that generates a parallel beam of light
  2. (astronomy) A small telescope attached to a larger one, used to point it in the correct general direction
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