| B | aerobic rod-shaped spore-producing bacterium |
|---|---|
| B | the 2nd letter of the Roman alphabet |
| B | the blood group whose red cells carry the B antigen |
| B | a logarithmic unit of sound intensity equal to 10 decibels |
| B | a trivalent metalloid element |
| B | originally thought to be a single vitamin but now separated into several B vitamins |
| B | (atomic or nuclear physics) a unit of nuclear cross section |
| B | battery for supplying a constant positive voltage to the plate of a vacuum tube |
| B | a lymphocyte derived from bone marrow that provides humoral immunity |
| B | originally thought to be a single vitamin but now separated into several B vitamins |
| B | American psychologist and leading proponent of behaviorism (1904-1990) |
| B | immediately below the A-horizon |