Definitions for "Porphyritic"
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.
Of or like smaller grained igneous rocks with separate crystals of greater size.
A textural term for igneous rock that has phenocrysts distributed throughout a finer matrix.