- 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
Rock containing relatively large conspicuous crystals, especially feldspar, in a fine-grained igneous matrix.
Origin of porphyryMiddle English porphiri, porfurie, from Old French porfire, from Italian porfiro, from Medieval Latin porphyrium, from Latin porphyr&imacron;t&emacron;s, from Greek porphur&imacron;t&emacron;s, from porphura, shellfish yielding purple dye, purple (from its color).
(countable and uncountable, plural porphyries)
From Ancient Greek Ï€Î¿ÏÏ†Ï…ÏÎ¯Ï„ÎµÏ‚ Î»Î¯Î¸Î¿Ï‚ ("purple stone").