[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.

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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.

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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.

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