| Acronym | Definition |
|---|
| ORRS➣Ongoing and Reviewable Resourcing Schemes (Ministry of Education; New Zealand) |
| ORRS➣Organic Resource Recovery System (food waste recycling program; Organic Resouce Management, Inc.; Woodbridge, Ontario, Canada) |
| ORRS➣Outer Ring Road System (Singapore) |
| ORRS➣Orange River Replanning Study (South Africa) |
| ORRS➣Outer Radial Reflector Surveillance |
| ORRS➣Outer Retinal Rod Segments (opthamology) |