| NR | Normal Range |
|---|---|
| nr | ne repetatur; do not repeat; 반복을 금함 |
| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreactive; nonrebreathing; no radiation; no reaction; no recurrence; no refill; no report; no respiration; no response; no result; nonresponder; nonretarded; normal range; normal reaction; normotensive rat; not readable; not recorded; not resolved; nurse; nursing [service]; nutrition ratio; Reynold's number |
| NR | Reynold's number |
| nr | near |
| NRA | nitrate reductase; nucleus retroambigualis |
| NRB | nonrejoining break |
| NRBC | National Rare Blood Club; normal red blood cell; nucleated red blood cell |
| NRbc | nucleated red blood cell |
| NRC | National Research Council; National Response Center; normal retinal correspondence; not routine care; Nuclear Regulatory Commission |