| PCU | pain control unit; primary care unit; patient care unit; pulmonary care unit |
|---|---|
| RU | radioulnar; rat unit; reading unit; residual urine; resin uptake; resistance unit; retrograde urogra... |
| SU | salicyluric acid; secretory unit; sensation unit; solar urticaria; sorbent unit; spectrophotometric ... |
| amu | atomic mass unit |
| BW | bacteriological warfare; bed wetting; below waist; biological warfare; biological weapon; birth weig... |