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Related to refractiveness: refractoriness
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refraction of light
i: angle of incidence
r: angle of refraction


1. The deflection of a wave, such as a light or sound wave, when it passes obliquely from one medium into another having a different index of refraction.
2. Astronomy The apparent change in position of a celestial object caused by the bending of light rays as they enter Earth's atmosphere.
3. Medicine
a. The ability of the eye to bend light so that an image is focused on the retina.
b. Determination of this ability in an eye.

re·frac′tion·al, re·frac′tive adj.
re·frac′tive·ly adv.
re·frac′tive·ness, re′frac·tiv′i·ty (rē′frăk-tĭv′ĭ-tē) n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.refractiveness - the physical property of a medium as determined by its index of refraction
bending, deflexion, deflection - the property of being bent or deflected
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Another study (13) reasoned that the factors that influence greater burden in this group include the greater seriousness of the disorder, a longer period of time passing before seeking treatment, unsatisfactory therapy, and resistance and refractiveness in relation to the available treatments.
A central reason for the potent virulence is probably due to the remarkable refractiveness of the virus to IFNs as a result of the induction of IFN decoy receptors.
In fact, HIF-1 overexpression correlates with poor outcomes in patients with head, neck, nasopharyngeal, colorectal, pancreatic, breast, cervical, bone, endometrial, ovarian, bladder, glial, and gastric cancers [9] and it is associated with refractiveness to conventional therapies [221].