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Definition of "collimate" [col•li•mate]

  • To make parallel; line up. (verb-transitive)
  • To adjust the line of sight of (an optical device). (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "collimate" in a sentence
  • "A slight vacuum is pulled behind an aluminized mylar plastic film to create a very large convex mirror to collimate the visual system in many aircraft simulators."
  • "In fact, if the particles in the jet are fast enough, they can collimate themselves quite nicely due to relativistic effects."
  • "In 2005 they used high-power ‘Luxeon’ LEDs, i.e. non-coherent sources, combined with a large Fresnel lens to collimate the non-directional light emitted, and managed two-way audio communications over a distance of 160 km (100 miles!) between mountaintops in Tasmania."