| pos | position; positive |
|---|---|
| PPM | permanent pacemaker; phosphopentomutase; physician practice management; pigmented pupillary membrane... |
| PT | pain threshold; parathormone; parathyroid; paroxysmal tachycardia; part time; patient; pericardial t... |
| RDA | recommended daily allowance; recommended dietary allowance; Registered Dental Assistant; right dorso... |
| RDP | right dorsoposterior [fetal position] |