| Au | Australia [antigen]; authorization; gold [Lat. aurum] |
|---|---|
| BC | Bachelor of Surgery [Lat. Baccal-aureus Chirurgiae]; back care; bactericidal concentration; basal ce... |
| BCh | Bachelor of Surgery [Lat. Baccalaureus Chirurgiae] |
| BChir | Bachelor of Surgery [Lat. Baccalaureus Chirurgiae] |
| bd | band; bundle; twice a day [Lat. bis die] |