| OX | optic chiasma; oxacillin; oxalate; oxide; orthopedic examination; oxytocin |
|---|---|
| PAME | preanesthesia medical examination; primary amebic meningoencephalitis |
| PEx | physical examination |
| PHE | periodic health examination; phenylephrine |
| PI | first meiotic prophase; isoelectric point; pacing impulse; package insert; pancreatic insufficiency;... |