| Acronym | Definition | 
|---|
| USEC➣Microsecond | 
| USEC➣Umts Security | 
| USEC➣User Based Security Model | 
| USEC➣United States Enrichment Corporation | 
| USEC➣United States East Coast | 
| USEC➣United States Eurasier Club (Fairfax, VA) | 
| USEC➣Unity Security Force (gaming) | 
| USEC➣Universal Services Echo Canceller |