- a type of rock quarried in ancient times in Egypt, with large feldspar crystals contained in a purplish groundmass
- any igneous rock with large, distinct crystals, esp. of alkali feldspar, embedded in a fine-grained matrix
Origin of porphyryMiddle English porfirie from Old French porfire from Medieval Latin porphyreum, altered from Classical Latin porphyrites from Classical Greek porphyrit?s (lithos), literally , purple (stone) from porphyros, purple
- Any of various varieties of reddish-purple rock, often containing light-colored crystals, used as a decorative stone.
- Geology Rock containing relatively large conspicuous crystals, especially of feldspar, in a fine-grained igneous matrix.
Origin of porphyryMiddle English porphiri, porfurie purplish-red porphyry from Old French porfire from Italian porfiro from Medieval Latin porphyrium from Latin porphyrītēs from Greek porphurītēs from porphurā mollusk yielding Tyrian purple, Tyrian purple garment ; see purple .
(countable and uncountable, plural porphyries)
From Ancient Greek Ï€Î¿ÏÏ†Ï…ÏÎ¯Ï„ÎµÏ‚ Î»Î¯Î¸Î¿Ï‚ ("purple stone").