| RU | radioulnar; rat unit; reading unit; residual urine; resin uptake; resistance unit; retrograde urogra... |
|---|---|
| SRD | service-related disability; Society for the Relief of Distress; Society for the Right to Die; sodium... |
| URF | unidentified reading frame; uterine relaxing factor |
| WRMT | Woodcock Reading Mastery Test |