WordReference Random House Unabridged Dictionary of American English © 2017
Bo•ra•zon  (bôrə zon′, bōr-),USA pronunciation [Chem. Trademark.]
  1. Chemistry, Trademarksa 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.

Collins Concise English Dictionary © HarperCollins Publishers::

borazon /ˈbɔːrəˌzɒn -zən/ n
  1. an extremely hard form of boron nitride
Etymology: 20th Century: from bor( on) + azo- + -on

'Borazon' also found in these entries:

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