| Abbreviation | Definition |
|---|---|
| BA | Brachial Artery |
| BA | Breast Augmentation |
| BA | Bronchial Asthma |
| BAB | Babinski's sign |
| BAC | Blood Alcohol Concentration |
| BACT | Bacteriologist |
| BACT | Bacteriology |
| BAD | Bipolar Affective Disorder |
| BADS | Behavioral Activation for Depression Scale |
| BAE | Barium Enema |
| BAEP | Bay Area Emergency Physicians |
| BAER | Burned Area Emergency Rehabilitation |
| BAG | Bindweed Afflicted Gardener |
| BAL | Balm |
| BAL | Blood Alcohol Level |
| BAL | British Anti-Lewisite |
| BAM | Basilar Artery Migraine |
| BAN | Bandage |
| BAO | Basal Acid Output |
| BAP | Brm Associated Protein |