diacaustic

Di`a*caus"tic, a. Etym: [Pref. dia- + caustic.] (Opt.) Defn: Pertaining to, or possessing the properties of, a species of caustic curves formed by refraction. See Caustic surface, under Caustic. Di`a*caus"tic, n. 1. (Med.) Defn: That which burns by refraction, as a double convex lens, or the sun's rays concentrated by such a lens, sometimes used as a cautery. 2. (Math.) Defn: A curved formed by the consecutive intersections of rays of light refracted through a lens.

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