Also found in: Thesaurus, Medical, Encyclopedia.
Related to refractiveness: refractoriness
click for a larger image
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.
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
References in periodicals archive ?
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].
Through numerous crossings between resistant and susceptible snails, these latter authors, using self-fecundation, concluded that susceptibility or refractiveness results from a broad variability of genes, and are not related to pigmentation.
These early observations sensitize a new concept that a protein may be responsible for refractiveness of a species than its susceptibility and absence of this protein makes a species vulnerable for dengue transmission.