PTTI
| Acronym | Definition |
|---|---|
| PTTI | Precise Time and Time Interval |
| PTTI | Postal, Telegraph and Telephone International |
| PTTI | Precise Time & Time Interval |
| PTTI | Performance Trading Technologies, Inc. (Fairfield, CT) |
| PTTI | Penetrating Thoracic Trauma Index |
| PTTI | Precise Time and Time Interface |
| PTTI | Parenchymal Transit Time Index |