- a brand name for a cubic, diamondlike, extremely hard form of boron nitride, obtained at high temperatures and pressures: used as an abrasive and grinding agent.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- an extremely hard form of boron nitride
C20: from bor (on) + azo- + -on
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