Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Pertaining to porphyry.
  • adj. Pertaining to porphyria.

from The Century Dictionary and Cyclopedia

  • Same as porphyritic.
  • Noting an acid, C10H4N2O7, obtained from euxanthone by the action of nitric acid. With ammonium carbonate it produces a deep-red color.

Etymologies

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