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.

Nearby words

  1. boroimhe, brian,
  2. boron,
  3. boron carbide,
  4. boron hydride,
  5. boron neutron capture therapy,
  6. boronia,
  7. boronic,
  8. borosilicate,
  9. borosilicate glass,
  10. borosilicic acid

Compare Borazon. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for boron nitride

boron nitride


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