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Definition of: porphyritic
(pôr′fə·rit′ik) adjective
1. Pertaining or relating to porphyry.
2. Mineral. Containing well–defined, relatively large crystals in a fine–grained, glassy base or groundmass. Also por′phy·rit′i·cal. [<Med. L porphyriticus <L porphyrites porphyry <Gk. porphyritēs (lithos), lit., (a) purplelike (stone) <porphyros purple]
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