Di`a*caus"tic (?), a. [Pref. dia- + caustic.] Opt.
Pertaining to, or possessing the properties of, a species of caustic curves formed by refraction. See Caustic surface, under Caustic.
© Webster 1913.
Di`a*caus"tic, n.
1. Med.
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.
A curved formed by the consecutive intersections of rays of light refracted through a lens.
© Webster 1913.