refract

[ri-frakt]
verb (used with object)
1.
to subject to refraction.
2.
to determine the refractive condition of (an eye).

Origin:
1605–15; < Latin refrāctus, past participle of refringere to break, force back, equivalent to re- re- + frac- (variant stem of frangere to break) + -tus past participle suffix

refractable, adjective
refractedly, adverb
refractedness, noun
nonrefracting, adjective
unrefracted, adjective
unrefracting, adjective
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World English Dictionary
refract (rɪˈfrækt)
 
vb
1.  to cause to undergo refraction
2.  to measure the refractive capabilities of (the eye, a lens, etc)
 
[C17: from Latin refractus broken up, from refringere, from re- + frangere to break]
 
re'fractable
 
adj

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American Heritage
Medical Dictionary

refract re·fract (rĭ-frākt')
v. re·fract·ed, re·fract·ing, re·fracts

  1. To deflect something, especially light, from a straight path by refraction.

  2. To determine the refraction of an eye or a lens.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Experiment how light, vibration, and magnets refract against it.
Besides the globs of paint, there's a prismatic cube that lets you refract
  lasers.
The roof features giant domelike panels to break and refract light into the
  fourth-floor galleries.
There was no one to reflect back a self-image of the explorer or serve as a
  prism to refract visions of the future.
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