noun
: any binary compound of boron and nitrogen ; especially : a fluffy white crystalline powder BN made in various ways (as by the reaction of ammonia and fused boric oxide) and used chiefly as a lubricant and electric insulator
noun
: any binary compound of boron and nitrogen ; especially : a fluffy white crystalline powder BN made in various ways (as by the reaction of ammonia and fused boric oxide) and used chiefly as a lubricant and electric insulator
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012