Found 2 items, similar to Porphyritic.
English → English (WordNet) Definition: porphyritic porphyritic adj : (of rocks) consisting of porphyry or containing large crystals in a fine groundmass of minerals
English → English (gcide) Definition: Porphyritic Porphyritic \Por`phy*rit"ic\, a. [Cf. F. porphyritique.] (Min.) Relating to, or resembling, porphyry, that is, characterized by the presence of distinct crystals, as of feldspar, quartz, or augite, in a relatively fine-grained base, often aphanitic or cryptocrystalline. [1913 Webster]