sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Research and Science Support Department | ** |
| Rural Special School District | ** |
| Remote Sensing Satellite Data | ** |
| Radiation Safety Systems Division | ** |
| Relief and Social Services Department | ** |
| Refrigeration Systems Store Design | * |
| Requirements Standards Selection and Design | * |
| Roadside Significant Sites Database | * |
| Rashtriya Samaj Sevak Dal | * |
| Regional and Sustainable Development | * |
| Rockwell Space Systems Division | * |
| Randomly Spaced Surface Data | * |
| Raytheon Submarine Signal Division | * |
| Rockwell Switching Systems Division | * |