What do a.m. and p.m. stand for?


[muhl-ahyt] /ˈmʌl aɪt/
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; after Mull, source of the rocks in which it was first identified; see -ite1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for mullite
  • mullite in refractories increases the fired strength, resistance to deformation under load, and thermal resistivity.
  • Second formed in brightly incandescent area into which a mullite gas-sampling tube is inserted.
  • Exclude plastic refractories and ramming mixes of mullite or extra high alumina.
British Dictionary definitions for mullite


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
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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