| Abbreviation | Definition |
|---|---|
| PAS | posterior airway space |
| PAS | primary antiphospholipid syndrome |
| PAS | problem appraisal scales |
| PAS | progressive accumulated stress |
| PAS | public address system |
| PAS | pulmonary artery stenosis |
| PASA | primary acquired sideroblastic anaemia |
| PASA | Purchasing And Supply Agency (NHS Purchasing And Supply Agency) |
| PAU | Paediatric Assessment Unit |
| PAU | penetrating atherosclerotic ulcer |
| PAU | postmenopausal atrophic urethritis |
| PBAC | policy-based access control |
| PBAC | position-based access control |
| PBC | peripheral blood cell |
| PBC | practice-based commissioning |
| PBC | public benefits corporation |
| PBCGC | Practice Based Commissioning Governance Committee |
| PBD | peroxisome biogenesis disorder |
| PBL | primary brain lymphoma |
| PBL | primary breast lymphoma |