refractive

[ri-frak-tiv]
adjective
1.
of or pertaining to refraction.
2.
Also, refractile. having power to refract.

Origin:
1665–75; < Late Latin refrāctīvus (of pronouns) reflexive. See refract, -ive

refractively, adverb
refractiveness, noun
nonrefractive, adjective
nonrefractively, adverb
nonrefractiveness, noun
unrefractive, adjective
unrefractively, adverb
unrefractiveness, noun
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
refractive (rɪˈfræktɪv)
 
adj
1.  of or concerned with refraction
2.  (of a material or substance) capable of causing refraction
 
refractively
 
adv
 
refractiveness
 
n
 
refractivity
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
The refractive power of the eye's corneal surface, a key to clear vision, is
  greatly reduced underwater.
That's probably because aragonite has two refractive indices, the extent to
  which a particular material focuses incoming light.
They studied a material with a low refractive index bordered by a layer with a
  high refractive index.
Most optical fibers have a core of pure silica and a cladding layer that is
  doped with ions to change its refractive index.
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