Webster's Revised Unabridged Dictionary · 1913

Refracting

Refracting , adjective

Serving or tending to refract; as, a refracting medium.
Collocations (2)
Refracting angle of a prism (Optics) , the angle of a triangular prism included between the two sides through which the refracted beam passes in the decomposition of light.
Refracting telescope (Optics) , See under Telescope.