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phyllite

[ fil-ahyt ]
/ ˈfɪl aɪt /
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noun

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

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Origin of phyllite

First recorded in 1820–30; phyll- + -ite1

OTHER WORDS FROM phyllite

phyl·lit·ic [fi-lit-ik], /fɪˈlɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use phyllite in a sentence

British Dictionary definitions for phyllite

phyllite
/ (ˈfɪlaɪt) /

noun

a compact lustrous metamorphic rock, rich in mica, derived from a shale or other clay-rich rock

Derived forms of phyllite

phyllitic (fɪˈlɪtɪk), adjective

Word Origin for phyllite

C19: from phyll (o) - + -ite 1
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

Scientific definitions for phyllite

phyllite
[ fĭlīt′ ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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