| atm | standard atmosphere |
|---|---|
| BS | Bachelor of Science; Bachelor of Surgery; Bacillus subtilis; Bartter syndrome; base strap; bedside; ... |
| BSU | Bartholin, Skene, urethral [glands]; basic structural unit; British standard unit |
| Cs | standard clearance; static respiratory compliance |
| DIS | Diagnostic Interview Schedule; draft international standard |