| Acronym | Meaning |
| HLA | High Level Architecture - Human Leukocyte Antigen |
| PBCK | Problem Between Chair And Keyboard (computer Help Desk In-joke) |
| PLP | Platonic Life Partner |
| CPD | Capabilities Production Document |
| RI | Rhode Island (postal Symbol) |
| VLAD | Vertical Line Array DIFAR |
| SIGCAT | Special Interest Group For CD-ROM Applications And Technology |
| DZ | Algeria (ISO 3166 Digram) - Drizzle (METAR Code) -Drop Zone |
| IWW | Industrial Workers Of The World |
| OASP | Operational Analysis Support Paper/Plan |