| Acronym | Definition |
|---|
| PTOS➣Patent and Trademark Office Society |
| PTOS➣Paper-Tape Operating System |
| PTOS➣Pennsylvania Trauma Outcome Study (Pennsylvania Trauma Systems Foundation; Mechanicsburg, PA) |
| PTOS➣Peacetime Operating Stock |
| PTOS➣Patriot Tactical Operations Simulation |
| PTOS➣Parks, Trails, Open Space (space planning) |