porphyritic(redirected from porphyritical)
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por·phy·rit·ic(pôr′fə-rĭt′ĭk) also por·phy·rit·i·cal (-ĭ-kəl)
1. Of or containing porphyry.
2. Containing relatively large isolated crystals in a mass of fine texture.
[Middle English porphiritike, from Medieval Latin porphyrīticus, from Greek porphyrītikos, from porphyrītēs, porphyry; see porphyry.]
1. (Geological Science) (of rocks) having large crystals in a fine groundmass of minerals
2. (Geological Science) consisting of porphyry
|Adj.||1.||porphyritic - (of rocks) consisting of porphyry or containing large crystals in a fine groundmass of minerals|