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1. (Science: medicine) Of or pertaining to purpura.

2. (Science: chemistry) 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.

Purpuric acid was formerly used to designate murexan. See Murexan.

Origin: Cf. F. Purpurique.