| Acronym | Definition |
|---|
| MWSI➣Mercury Waste Solutions, Inc. (Union Grove, WI) |
| MWSI➣Mobile Whole Slide Imaging (converting glass slides into digital images) |
| MWSI➣Multicultural Workforce Strategic Initiative (USDA) |
| MWSI➣Morgan Wilshire Securities, Inc. (est. 1998) |
| MWSI➣Minnesota-Wisconsin Stability Interface (utilities) |
| MWSI➣Metal Worx Systems, Inc. (Plain City, OH) |
| MWSI➣Maynilad Water Services, Incorporated (Philippines) |