Quiz: Remember the definition of mal de mer?


[fahyuh r-brik] /ˈfaɪərˌbrɪk/
a brick made of fire clay.
1785-95; fire + brick Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for firebrick
  • Only two colours have been used, firebrick and rich pure gold.
  • Bricklayers also install firebrick linings in industrial furnaces.
  • All of the furnace stacks still contain vestiges of their firebrick linings.
  • Portions of the original firebrick inwall still remain.
  • The walls and floor of the tunnel are lined with firebrick.
  • Replace firebrick and other insulating materials when you see crumbling or other signs of deterioration.
  • Fire clay producers were mostly refractories manufacturers that used the clays in firebrick and other refractories.
  • firebrick, including fireplaces and chimney planning and layout including safety measures and building codes.
  • These workers specialize in installing firebrick or refractory tile.
  • If the chimney is firebrick then the squirrel can climb out on its own.
British Dictionary definitions for firebrick


a refractory brick made of fire clay, used for lining furnaces, flues, etc
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
Cite This Source
Encyclopedia Article for firebrick

refractory material consisting of nonmetallic minerals formed in a variety of shapes for use at high temperatures, particularly in structures for metallurgical operations and glass manufacturing. Principal raw materials for firebrick include fireclays, mainly hydrated aluminum silicates; minerals of high aluminum oxide content, such as bauxite, diaspore, and kyanite; sources of silica, including sand and quartzite; magnesia minerals, magnesite, dolomite, forsterite, and olivine; chromite, a solid solution of chromic oxide with the oxides of aluminum, iron, and magnesium; carbon as graphite or coke; and vermiculite mica. Minor raw materials are zirconia, zircon, thoria, beryllia, titania, and ceria, and other minerals containing rare-earth elements

Learn more about firebrick with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for firebrick

Few English speakers likely know this word

Word Value for firebrick

Scrabble Words With Friends

Nearby words for firebrick