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boron nitride

noun, Chemistry
1.
a white powder, BN, formed by heating boron in nitrogen. In its ordinary form, it has a structure of stacked layers of hexagonal rings, very similar to that of graphite, and is used as a refractory electrical insulator.
Compare Borazon.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for boron nitride
  • The sample is held in crucibles made from alumina, boron nitride, or graphite.
  • The tool substrate may be ceramic or metal and the abrasive particles are preferably diamond, but may be cubic boron nitride.
British Dictionary definitions for boron nitride

boron nitride

noun
1.
a white inert crystalline solid existing both in a graphite-like form and in an extremely hard diamond-like form (borazon). It is used as a refractory, high temperature lubricant and insulator, and heat shield. Formula: BN
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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Encyclopedia Article for boron nitride

(chemical formula BN), synthetically produced crystalline compound of boron and nitrogen, an industrial ceramic material of limited but important application, principally in electrical insulators and cutting tools. It is made in two crystallographic forms, hexagonal boron nitride (H-BN) and cubic boron nitride (C-BN).

Learn more about boron nitride with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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