porphyry

One entry found for porphyry.

Main Entry: por·phy·ry
Pronunciation: 'por-f(&-)rE
Function: noun
Inflected Form(s): plural -ries
Etymology: Middle English porphiri, from Medieval Latin porphyrium, alteration of Latin porphyrites, from Greek porphyritEs (lithos), literally, stone like Tyrian purple, from porphyra purple
1 : a rock consisting of feldspar crystals embedded in a compact dark red or purple groundmass
2 : an igneous rock of porphyritic texture