| UP | parallax unsharpness; ulcerative proctitis; ultrahigh purity; unipolar; upright posture; ureteropelv... |
|---|---|
| UPase | uridine phosphorylase |
| UR | unconditioned reflex; upper respiratory; uridine; urinal; urology; utilization review |
| Urd | uridine |
| UTP | unilateral tension pneumothorax; unshielded twisted pair; uridine triphosphate |