| PASA | para-aminosalicylic acid; primary acquired sideroblastic anemia; proximal articular set angle |
|---|---|
| POS | periosteal osteosarcoma; physician order set; point of service; polycystic ovary syndrome; psychoorg... |
| PUMS | patient utility measurement set; permanently unfit for military service |
| RISC | reduced-instruction-set computer |
| SET | surrogate embryo transfer; systolic ejection time |