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mullite

[muhl-ahyt] /ˈmʌl aɪt/
noun
1.
a rare clay mineral, aluminum silicate, Al 6 Si 2 O 1 3 , produced artificially during various melting and firing processes: used as a refractory.
Also called porcelainite.
Origin of mullite
1924
1924; after Mull, source of the rocks in which it was first identified; see -ite1
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Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for mullite

mullite

/ˈmʌlaɪt/
noun
1.
a colourless mineral consisting of aluminium silicate in orthorhombic crystalline form: used as a refractory. Formula: Al6Si2O13
Word Origin
from island of Mull
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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