| Acronym | Definition |
|---|
| PIRT➣Partners in Responsible Tourism (San Francisco Bay Area) |
| PIRT➣Police Initial Recruitment Test (UK; also seen as PIR) |
| PIRT➣Pretreatment Implementation Review Task Force |
| PIRT➣Phosphoinositide-Interacting Regulator of TRP (Transient Receptor Potential Channels; protein) |
| PIRT➣Pathologist Investigator Residency Training Program (University of Pittsburgh |
| PIRT➣Phenomena/Process Identification and Ranking Table |