| Acronym | Definition |
|---|
| NSIR➣NATO (North Atlantic Treaty Organization) Summit Independent Report |
| NSIR➣Nuclear Security and Incident Response |
| NSIR➣National Standard for Incident Recording |
| NSIR➣Normalized Signal-To-Interference Ratio |
| NSIR➣National Stable Isotope Resource |
| NSIR➣Non-Specific Immune Response |