| diacaustic | <optics> Pertaining to, or possessing the properties of, a species of caustic curves formed by refraction. See Caustic surface, under Caustic. Origin: Pref. Dia- + caustic. 1. <medicine> 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. <mathematics> A curved formed by the consecutive intersections of rays of light refracted through a lens. Source: Websters Dictionary (01 Mar 1998) |
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