Re·fract v. t. [imp. & p. p. Refracted; p. pr. & vb. n. Refracting.]
1. To bend sharply and abruptly back; to break off.
2. To break the natural course of, as rays of light orr 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 refrcts the rays of light as they pass into it from a rare medium.
Re·fract·ing, a. Serving or tending to refract; as, a refracting medium.
Refracting angle of a prism Opt., the angle of a triangular prism included between the two sides through which the refracted beam passes in the decomposition of light.
Refracting telescope. Opt. See under Telescope.