| PcB | near point of convergence to the intercentral base line [punctum convergens basalis] |
|---|---|
| PLES | parallel-line equal space |
| POIS | Parkland On-Line Information Systems |
| PSL | parasternal line; photostimulable luminescence; potassium, sodium chloride, and sodium lactate [solu... |
| RL | radial line; radiation laboratory; reduction level; renal dysplasia-limb defects [syndrome]; resisti... |