| 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 |