| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreac... |
|---|---|
| ACR | abnormally contracting region; absolute catabolic rate; acriflavine; adenomatosis of colon and rectu... |
| ARF | acute renal failure; acute respiratory failure; acute rheumatic fever; Addiction Research Foundation... |
| CRF | case report form; chronic renal failure; chronic respiratory failure; coagulase-reacting factor; con... |
| ESR | Einstein stoke radius; electric skin resistance; electron spin resonance; equipment service report; ... |