| Acronym | Meaning |
| SARS | Severe Acute Respiratory Syndrome |
| TTO | Trinidad And Tobago (ISO 3166 Trigram) |
| RESNA | Rehabilitation Engineering And Assistive Technology Society Of North America |
| PACOM | (U.S.) Pacific Command |
| CPF | Calibration Parameter File - Canadian Patrol Frigate |
| YM | Yottametre |
| NER | Niger (ISO 3166 Trigram) |
| P3I OR P?I | PrePlanned Product Improvement |
| ICBN | International Code Of Botanical Nomenclature |
| HAI | Human Awareness Institute |