| Acronym | Meaning |
| PT | Petatesla -Physical Training (in The Army) -Portugal (ISO 3166 Digram) |
| TT | Tatar Language (ISO 639-1 Code) |
| CA | Catalan Language (ISO 639-1 Code) |
| PAYE | Pay As You Earn |
| BOM | Base Object Model - Bill Of Materials - Block Of The Month Quilting Term |
| RTI | Run-Time Infrastructure (Simulation) |
| PTO | Patent & Trademark Office - Please Turn Over |
| ZMK | Zambian Kwacha (ISO 4217 Currency Code) |
| AWP | Awaiting Parts (SM&R Code) |
| MTBF | Mean Time Between Failures |