| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
|---|---|
| EPR | early progressive resistance; electron paramagnetic resonance; electronic patient record; electrophr... |
| PR | by way of the rectum [Lat. per rectum]; far point [of accommodation] [Lat. punctum remotum]; palindr... |
| PVR | peripheral vascular resistance; perspective volume rendering; poliovirus receptor; postvoiding resid... |
| RVR | reduced vascular response; renal vascular resistance; repetitive ventricular response; resistance to... |