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porphyritic

[pawr-fuh-rit-ik] /ˌpɔr fəˈrɪt ɪk/
adjective, Petrology
1.
of, pertaining to, containing, or resembling porphyry, its texture, or its structure.
Origin
late Middle English
1375-1425
1375-1425; late Middle English porphiritike < Medieval Latin porphyrīticus < Greek porphyrītikós of porphyry; see -ic
Related forms
nonporphyritic, adjective
pseudoporphyritic, adjective
subporphyritic, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for porphyritic
  • Two distinct crystal sizes would develop in this situation, producing a porphyritic texture.
  • porphyritic rocks occur between the schists and the quartzites.
British Dictionary definitions for porphyritic

porphyritic

/ˌpɔːfɪˈrɪtɪk/
adjective
1.
(of rocks) having large crystals in a fine groundmass of minerals
2.
consisting of porphyry
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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porphyritic 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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