sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Ontario Trust for Student Support | **** |
| Ontario Trust for Student | **** |
| Overseas Trade Support for Smes | ** |
| Open Tracheal Suction System | ** |
| ODC Training Support System | * |
| Off the Shelf Software | * |
| Oxford Text Searching System | * |
| Office of Technology Support Services | * |