a. [ Gr. "i`ppos horse + o"y`ron urine: cf. F. hippurique. ] (Physiol. Chem.) Obtained from the urine of horses; as, hippuric acid. [ 1913 Webster ]
Hippuric acid, a white crystalline substance, containing nitrogen, present in the urine of herbivorous animals, and in small quantity in human urine. By the action of acids, it is decomposed into benzoic acid and glycocoll. [ 1913 Webster ]
1. (Med.) Of or pertaining to purpura. Dunglison. [ 1913 Webster ]
2. (Chem.) Pertaining to or designating, a nitrogenous acid contained in uric acid. It is not known in the pure state, but forms well-known purple-red compounds (as murexide), whence its name. [ 1913 Webster ]
☞ Purpuric acid was formerly used to designate murexan. See Murexan. [ 1913 Webster ]
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