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Dictionary


por•phy•roid



Pronunciation: (pôr'fu-roid"), [key]
n.
1. a rock resembling porphyry.
2. a sedimentary rock that has been metamorphosed so as to leave some original crystals in a fine-textured, layered matrix.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

porphyrizeporphyry

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