porphyritic

(pôr′fə ritik)

adjective

  1. of porphyry
  2. like porphyry; having distinct crystals in a fine-grained mass

Origin: ME porphiritike < ML porphyriticus < L porphyrites < Gr porphyritēs

See porphyritic in American Heritage Dictionary 4

adjective
  1. Of or containing porphyry.
  2. Containing relatively large isolated crystals in a mass of fine texture.

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