1) Crooked 2) Deflective 3) Prismatic 4) Refractile 1) Physical phenomenon 2) Refractile 
• (a.) Serving or having power to refract, or turn from a direct course; pertaining to refraction; as, refractive surfaces; refractive powers.
Serving or having power to refract, or turn from a direct course; pertaining to refraction; as, refractive surfaces; refractive powers. Refractive index. ... <medicine> The ratio of the sine of the angle of incidence to the sine of the angle of refraction for a ray passing out of one of the media into the other. ... Origin: Cf. F. Refractif. ...
(re-frak´tiv) pertaining to or subserving a process of refraction; having the power to refract.
Re·fract'ive adjective [ Confer French réfractif . See Refract .] Serving or having power to refract, or turn from a direct course; pertaining to refraction; as, refractive surfaces; refractive powers. Refractive index . (Opt.) 
Type: Term Pronunciation: rē-frak′tiv Definitions: 1. Pertaining to refraction. 2. Having the power to refract. Synonyms: refringent
Light-bending.
[adj] - of or relating to or capable of refraction
refractile adjective of or relating to or capable of refraction; `the refractive characteristics of the eye`