[ pawr-fuh-roid ]
/ ˈpɔr fəˌrɔɪd /
a rock resembling porphyry.
a sedimentary rock that has been metamorphosed so as to leave some original crystals in a fine-textured, layered matrix.
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Words nearby porphyroid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for porphyroid
Pumice and trachyte are the most common rocks around this mountain, and these are augitic or porphyroid.The Andes and the Amazon|James Orton
British Dictionary definitions for porphyroid
/ (ˈpɔːfɪˌrɔɪd) /
(of metamorphic rocks) having a texture characterized by large crystals set in a finer groundmass
a metamorphic rock having this texture
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