1. (v.) To bend or turn; as, to refract light\.

2. (n.) To break the natural course of, as rays of light or heat, when passing from one transparent medium to another of different density; to cause to deviate from a direct course by an action distinct from reflection; as, a dense medium refracts the rays of light as they pass into it from a rare medium.

bend bias crook curve deflect deviate diffract diffuse disperse distort diverge divert dogleg hairpin pull scatter skew turn twist warp zigzag