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porphyry

[pawr-fuh-ree] /ˈpɔr fə ri/
noun, plural porphyries.
1.
a very hard rock, anciently quarried in Egypt, having a dark, purplish-red groundmass containing small crystals of feldspar.
2.
Petrology. any igneous rock containing coarse crystals, as phenocrysts, in a finer-grained groundmass.
Origin
1350-1400
1350-1400; Middle English porfurie, porfirie < Medieval Latin porphyreum, alteration of Latin porphyrītēs < Greek porphyrī́tēs porphyry, short for porphyrī́tēs líthos porphyritic (i.e., purplish) stone, equivalent to pórphyr(os) purple + -ītēs; see -ite1

Porphyry

[pawr-fuh-ree] /ˈpɔr fə ri/
noun
1.
(Malchus) a.d. c233–c304, Greek philosopher.
Related forms
Porphyrean
[pawr-feer-ee-uh n] /pɔrˈfɪər i ən/ (Show IPA),
adjective
Porphyrian, adjective, noun
Porphyrianist, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for porphyry

porphyry

/ˈpɔːfɪrɪ/
noun (pl) -ries
1.
any igneous rock with large crystals embedded in a finer groundmass of minerals
2.
(obsolete) a reddish-purple rock consisting of large crystals of feldspar in a finer groundmass of feldspar, hornblende, etc
Word Origin
C14 porfurie, from Late Latin porphyrītēs, from Greek porphuritēs (lithos) purple (stone), from porphuros purple

Porphyry

/ˈpɔːfɪrɪ/
noun
1.
original name Malchus. 232–305 ad, Greek Neo-Platonist philosopher, born in Syria; disciple and biographer of Plotinus
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for porphyry
porphyry
"beautiful and valuable stone," 1395, from O.Fr. porfire, from L. porphyrites, a purple semi-precious stone quarried near Red Sea in Egypt, from Gk. porphyrites "like purple" (the stone's name in Gk.), from porphyra (n.) "purple."
Online Etymology Dictionary, © 2010 Douglas Harper
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porphyry in Science
porphyry
  (pôr'fə-rē)   
An igneous rock containing the large crystals known as phenocrysts embedded in a fine-grained matrix.

porphyritic adjective (pôr'fə-rĭt'ĭk)
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for porphyry

Porphyry

Neoplatonist Greek philosopher, important both as an editor and as a biographer of the philosopher Plotinus and for his commentary on Aristotle's Categories, which set the stage for medieval developments of logic and the problem of universals. Boethius' Latin translation of the introduction (Isagoge) became a standard medieval textbook.

Learn more about Porphyry with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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