a. [ Pref. cata + caustic. ] (Physics) Relating to, or having the properties of, a caustic curve formed by reflection. See Caustic, a. Nichol. [ 1913 Webster ]
n. (Physics) A caustic curve formed by reflection of light. Nichol. [ 1913 Webster ]
n. [ Cf. F. tacaud. See Tomcod. ] (Zool.) The bib, or whiting pout. [ Prov. Eng. ] [ 1913 Webster ]