sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Housing Outreach for Muslim Sisters | *** |
| Hands on Molecular Science | ** |
| heads of midwifery services | ** |
| Health Options and Management Services | ** |
| Home Operations and Management Systems | * |
| Hospital Operations and Management Service | * |
| Hubble Optical Mechanical Simulator | * |
| Housing Operations Management System | * |
| Hanford Occupational Medical System | * |
| Hydro Optimization Management System | * |