porphyry

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por·phy·ry

 (pôr′fə-rē)
n. pl. por·phy·ries
1. Any of various varieties of reddish-purple rock, often containing light-colored crystals, used as a decorative stone.
2. Geology Rock containing relatively large conspicuous crystals, especially of feldspar, in a fine-grained igneous matrix.

[Middle 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.]

porphyry

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

Porphyry

(ˈpɔːfɪrɪ)
n
(Biography) original name Malchus. 232–305 ad, Greek Neo-Platonist philosopher, born in Syria; disciple and biographer of Plotinus

por•phy•ry

(ˈpɔr fə ri)

n., pl. -ries.
1. a very hard rock, anciently quarried in Egypt, having a dark, purplish red groundmass containing small crystals of feldspar.
2. any igneous rock containing coarse crystals, as phenocrysts, in a finer-grained groundmass.
[1350–1400; Middle English porfurie, porfirie < Medieval Latin porphyreum, alter. of Latin porphyrītēs < Greek porphyritēs (líthos) porphyritic (i.e., purplish) stone =pórphyr(os) purple + -ītēs; see -ite1]
por`phy•rit′ic (-ˈrɪt ɪk) adj.

por·phy·ry

(pôr′fə-rē)
A fine-grained igneous rock containing some relatively large crystals, especially of feldspar.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.porphyry - any igneous rock with crystals embedded in a finer groundmass of mineralsporphyry - any igneous rock with crystals embedded in a finer groundmass of minerals
groundmass - (geology) the matrix of fine-grained crystalline material in which larger crystals are embedded
igneous rock - rock formed by the solidification of molten magma
Translations

porphyry

[ˈpɔːfɪrɪ] Npórfido m

porphyry

nPorphyr m
References in periodicals archive ?
Among his topics are the integration of humanism in the educational program of the Jesuits, Jesuits between religion and science, the Jesuits and the Janus-faced history of natural sciences, Rodrigo de Arriaga on immortality as a response to Platonism, and the Porphyrian Tree in philosophy of the 17th and 18th centuries.
Evidently, Augustine read a few Plotinian and Porphyrian treatises, but those he had read he knew well.
This book introduces the quasi Porphyrian trees that serve to structure much of the information Fludd presents (this compendious method of presentation was employed earlier by Artusi in his summary of Zarlino's work).