n. [ For co. tangens, an abbrev. of L. complementi tangens. See Tangent. ] (Trig.) The tangent of the complement of an arc or angle. See Illust. of Functions. [ 1913 Webster ]

n. [ F., fr. narcotine, by transposition of letters. ] (Chem.) A white, crystalline substance, C12H13NO3, obtained as a product of the decomposition of narcotine. It has weak basic properties, and is usually regarded as an alkaloid. [ 1913 Webster ]