porphyroid
American Heritage Dictionary:
Top
por·phy·roid
(pôr'fə-roid') 
n.
Metamorphic rock having porphyritic texture.
n.
Metamorphic rock having porphyritic texture.
Post a question - any question - to the WikiAnswers community:
Copyrights:
American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
Read more