- a rare clay mineral, aluminum silicate, Al6Si2O13, produced artificially during various melting and firing processes: used as a refractory.
Origin of mullite
Also called porcelainite.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a colourless mineral consisting of aluminium silicate in orthorhombic crystalline form: used as a refractory. Formula: Al 6 Si 2 O 13
from island of Mull
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