Refractile
adjective
1.
refractive (def 2).
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noun 1. See under telescope (def 1). noun 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end […]
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adjective 1. of or relating to refraction. 2. Also, refractile. having power to refract. adjective 1. of or concerned with refraction 2. (of a material or substance) capable of causing refraction
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noun, Optics. 1. index of refraction. refractive index noun 1. (physics) a measure of the extent to which radiation is refracted on passing through the interface between two media. It is the ratio of the sine of the angle of incidence to the sine of the angle of refraction, which can be shown to be […]