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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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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
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Encyclopedia Article for boron-nitride

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).

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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