| Acronym | Meaning |
| DPCO | Double-Pole Change Over |
| PEN | Peruvian Sol (ISO 4217 Currency Code) -PolyEthylene Naphthalate |
| MEV | Medical Evacuation Vehicle - Musica Elettronica Viva |
| PB | Lead (Latin Plumbum) |
| GBBC | Great Backyard Bird Count |
| OPTAR | Operational Target |
| RMS | Rate-Monotonic Scheduling - Richard M. Stallman - Root-Mean-Square - Royal Mail Ship (e.g. RMS Titanic) |
| MOO | Measure Of Outcome |
| PWL | PieceWise Linear (describing A Mathematical Function) |
| IFO | Identified Flying Object (see Also UFO) |