| Acronym | Definition |
|---|
| RRSS➣Rear Reflecting Surround System (home theater) |
| RRSS➣Regional Residential Services Society (Dartmouth, Nova Scotia, Canada) |
| RRSS➣Restricted Residual Sum of Squares (statistics) |
| RRSS➣Really Really Simple Syndication |
| RRSS➣Reactor Room Spray System |
| RRSS➣Radical Radiotherapy with Salvage Surgery (cancer treatment) |