| Acronym | Meaning |
 | HLA | High Level Architecture - Human Leukocyte Antigen |
| PEN | Peruvian Sol (ISO 4217 Currency Code) -PolyEthylene Naphthalate |
| NAVFOR | Naval Force |
| TRP | Troop |
| CDM | Clean Development Mechanism (Kyoto Protocol) - Cold Dark Matter (astronomy) |
| LHD | Litterarum Humaniorum Doctor (Latin |
| LA | Lanthanum |
| FFA | Forum Fisheries Agency -Free-Fire Area - Fusiform Face Area - Football Federation Australia - Future Farmers Of America (today The National FFA Organization) |
| SNS | Spallation Neutron Source |
| NYHA | New York Heart Association |
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