porphyry
1 Americannoun
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porphyries
plural
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a very hard rock, anciently quarried in Egypt, having a dark, purplish-red groundmass containing small crystals of feldspar.
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Petrology. any igneous rock containing coarse crystals, as phenocrysts, in a finer-grained groundmass.
noun
noun
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any igneous rock with large crystals embedded in a finer groundmass of minerals
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obsolete a reddish-purple rock consisting of large crystals of feldspar in a finer groundmass of feldspar, hornblende, etc
noun
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Etymology
Origin of porphyry
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 -ite 1
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
They are clad variously in red porphyry, black basalt, gray granite and yellowish sandstone from nearby Montjuïc, with emblems symbolizing the four evangelists, the 12 apostles and an assortment of Catholic saints and geographic regions.
From The Wall Street Journal ● Aug. 14, 2026
The team's ongoing research shows similar results for identifying porphyry copper deposits.
From Science Daily ● Oct. 24, 2023
It's a square of about 7.5 metres, with a design of interlocking patterns, using inlaid stones, such as purple-coloured porphyry and yellow limestone.
From BBC ● Mar. 23, 2023
The attractions here include a massive ten-sided table with a porphyry top and an elaborate base adorned with large gilt bronze masks of the four seasons.
From New York Times ● Dec. 27, 2018
Like the stadium, most were being clad with natural stone, all of it German—more limestone from Franconia, basalt from the Eifel hills, granite and marble from Silesia, travertine from Thuringia, porphyry from Saxony.
From "The Boys in the Boat: Nine Americans and Their Epic Quest for Gold at the 1936 Berlin Olympics" by Daniel James Brown
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Working with Porphyry Press, a micropublisher based in McCarthy, I spent the past few years researching and writing a history of that rambunctious half-century.
From Seattle Times ● Apr. 8, 2022
Porphyry deposits are typically the largest mines on Earth.
From Textbooks ● Jan. 1, 2017
Porphyry deposits are the most important source of copper and molybdenum in British Columbia, the western United States, and Central and South America.
From Textbooks ● Jan. 1, 2015
His chief works were a study of the Isagoge of Porphyry and a commentary on Plato’s Phaedrus.
From Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 3 "Helmont, Jean" to "Hernosand" by Various
Egyptian monks gradually won over the country folk, and in 402, under the influence of Theodosius and Porphyry the local bishop, the Marneion was destroyed and the cross made politically supreme.
From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various
It was at this epoch that the rocks called feldspars, syenites, and porphyries appeared.
From A Journey to the Centre of the Earth by Jules Verne
A new stall, a reredos, the choir repaved, rich marbles and porphyries used, and stained glass put up mainly by Clayton and Bell, were the chief items of restoration.
From Cathedral Cities of England by George Gilbert
Gneiss, he thinks, resulted from the detritus of granitic rocks, by means of an inappreciable cement, and formed in a way analogous to that of the porphyries.
From Lamarck, the Founder of Evolution His Life and Work by A. S. (Alpheus Spring) Packard
Later views favor solutions coming directly from the porphyries or deeper igneous sources.
From The Economic Aspect of Geology by C. K. (Charles Kenneth) Leith
These minerals constitute the main constituents of granite, gneiss, and mica schist, of basalt, dolerite, and many porphyries.
From COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 by Alexander von Humboldt
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