[Cf. prec. The fuller form urotoxicity is sometimes used.] The toxic quality or substance of the urine; a unit of urine in respect of its toxicity.
1890. G. M. Gould, Med. Dict., 452/2. Urotoxy, a term invented by Bouchard to denote the standard of toxicity of urine necessary to kill a kilogramme of living substance.
1898. V. C. Vaughan, Ptomaïns, etc. 125. The term urotoxy has been employed to designate the relative toxicity of the urine in various conditions. Ibid., 127. The urotoxic coefficient is the number of urotoxics which 1 kgm. of man forms in twenty-four hours.