| Acronym | Meaning |
| MPFC | Medial PreFrontal Cortex |
| AIRS | Aerometric Information Retrieval System (obsolete; Replaced With AFS) |
| UPC | Universal Product Code |
| DRC | Democratic Republic Of The Congo |
| MEX | Mexico (ISO 3166 Trigram) |
| AFAIR | As Far As I Remember/Recall |
| NSN | National Stock Number |
| TZA | Tanzania (ISO 3166 Trigram) |
| MMR | Measles |
| ZC | Zettacoulomb |