D defs.my
Entry 3 senses · 2 variants Webster, 1913

Diacaustic

· Di·a·caus·tic · IPA
01 a. Pertaining to, or possessing the properties of, a species of caustic curves formed by refraction. See Caustic surface, under Caustic.
  1. 1.
    Pertaining to, or possessing the properties of, a species of caustic curves formed by refraction. See Caustic surface, under Caustic.(Opt.) See: Caustic
02 n. 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.
  1. 1.
    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.(Med.)
  2. 2.
    A curved formed by the consecutive intersections of rays of light refracted through a lens.(Math.)