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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

Something that changes the direction of a ray of light, sound, heat, or the like, in passing obliquely from one medium into another in which its wave velocity is different.

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Usage examples (37)
  • Scientific and assembled small refractor telescopes.
  • Each star was a huge refractor, a gravitational lens.
  • The 15 inch refractor belonging to the Harvard College
  • It only comes in two styles – refractor or reflector.
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