| pH-stat | apparatus for maintaining the pH of a solution |
|---|---|
| PhyS | physiologic saline [solution] |
| pOH | hydroxide ion concentration in a solution |
| PSL | parasternal line; photostimulable luminescence; potassium, sodium chloride, and sodium lactate [solu... |
| PSS | painful shoulder syndrome; physiologic saline solution; porcine stress syndrome; primary Sjogren syn... |