| UN | United Nations; 국제연합 |
|---|---|
| UN | ulnar nerve; undernourished; unilateral neglect; urea nitrogen; urinary nitrogen |
| UNa | urinary sodium |
| UNAI | uniform needs assessment for posthospital care |
| uncomp | uncompensated |
| uncond | unconditioned |
| UNCV | ulnar nerve conduction velocity |
| undet | undetermined |
| UNDRO | United Nations Disaster Relief Organization |
| UNE | urinary norepinephrine |