Cubic Boron Nitride (also written as cBN). Boron nitride with a cubic crystalline structure which with diamond comprise the class of abrasives known as superabrasives. With a hardness second to diamond and no equivalent natural mineral, CBN is produced synthetically in a high temperature, high pressure process similar to synthetic diamond. Used as an abrasive mineral, a hard coating material, and machining insert, CBN's primary value in grinding if for machining of ferrous materials which chemically reaction with diamond.

Capacity Building Network

Campus Backbone Network. UCLA's campus-wide network infrastructure and link to the internet, maintained by Communications Technology Services.

Community Based Network. A local organization that promotes and guides deployment of infrastructure in their region.

CBN is a radio station broadcasting at 640 k Hz (AM) from St. John's, Newfoundland and Labrador, Canada, and is the local Radio One station of the Canadian Broadcasting Corporation.