any of the class of compounds containing the group BH 4 −, as sodium borohydride, used chiefly as reducing agents.
a nonmetallic element occurring naturally only in combination, as in borax or boric acid, and obtained in either an amorphous or a crystalline form when reduced from its compounds. Symbol: B; atomic weight: 10.811; atomic number: 5. Historical Examples A Textbook of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer and John […]
a black, crystalline, extremely hard, water-insoluble solid, B 4 C, used chiefly as a moderator in nuclear reactors, as an abrasive, and as a refractory. noun a black extremely hard inert substance having a high capture cross section for thermal neutrons. It is used as an abrasive and refractory and in control rods in nuclear […]
boron neutron capture therapy
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. noun a white inert crystalline solid existing both in a graphite-like form and in an extremely hard […]