refringency
Re*frin"gen*cy (r*frn"jen*s), n. Defn: The power possessed by a substance to refract a ray; as, different substances have different refringencies. Nichol.
Re*frin"gen*cy (r*frn"jen*s), n. Defn: The power possessed by a substance to refract a ray; as, different substances have different refringencies. Nichol.