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phyllosilicate

[fil-oh-sil-i-kit, -keyt]
noun
  1. any silicate mineral having the tetrahedral silicate groups linked in sheets, each group containing four oxygen atoms, three of which are shared with other groups so that the ratio of silicon atoms to oxygen atoms is two to five.
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Origin of phyllosilicate

First recorded in 1945–50; phyllo- + silicate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for phyllosilicate

phyllosilicate

noun
  1. any of a class of silicate minerals, including talc, consisting of thin sheets
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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