To bend sharply and abruptly back; to break off.

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.

When light bends at an interface between two transparent materials. We find many things in our everyday experience refracting light: glass, water, air, plastic. The illusion of a broken leg dangling in the pool is due to the refraction of light. See also index of refraction refractive index See index of refraction

determine the refracting power of (a lens)

To change direction.