boron nitride

boron nitride

noun Chemistry.
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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Boron nitride is always a great word to know.
So is yield. Does it mean:
a chemical that consumes or renders inactive the impurities in a mixture
the quantity of product formed by the interaction of two or more substances, generally expressed as a percentage
Collins
World English Dictionary
boron nitride
 
n
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 10th Edition
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Encyclopedia Britannica
Encyclopedia

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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