sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Renal transplant artery stenosis | ** |
| Rail Training Audit Services | ** |
| Road Transport Aviation and Shipping | ** |
| Rocketdyne Truss Attachment System | ** |
| Rubber Trade Association of Singapore | ** |
| Real Time Alarm SubSecond | * |
| Remote Tactical Assistance System | * |