a slaty rock, the cleavage planes of which have a luster imparted by minute scales of mica.

1820–30; phyll- + -ite1

phyllitic [fi-lit-ik] , adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To phyllite
World English Dictionary
phyllite (ˈfɪlaɪt)
a compact lustrous metamorphic rock, rich in mica, derived from a shale or other clay-rich rock
[C19: from phyll(o)- + -ite1]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
phyllite   (fĭl'īt')  Pronunciation Key 
A green, gray, or red metamorphic rock, similar to slate but often having a wavy surface and a distinctive luster imparted by the presence of mica.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Light-gray to light-tan marble, phyllite, and calcareous phyllite.
If slate minerals further recrystallize, giving the rocks a shiny appearance, the new rock is phyllite.
It consists of gray-green phyllite, sandy phyllite, and slate.
Related Words
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature