| Acronym | Definition |
|---|
| MSIR➣Morphine Sulfate Immediate Release (medication) |
| MSIR➣Midwest Shiba Inu Rescue (Gurnee, IL) |
| MSIR➣Master of Science in International Relations |
| MSIR➣Master of Science in Industrial Relations |
| MSIR➣Markov Switching Imperfect Repair (reliability model) |
| MSIR➣Maximum Signal-to-Interference Ratio |
| MSIR➣Master Stock Inventory Record |
| MSIR➣Master Stock Item Record |
| MSIR➣Morphine Sulphate Instant Release |