| Acronym | Meaning |
| CHL | Chile (ISO 3166 Trigram) |
| OSCE | Organisation For Security And Cooperation In Europe |
| OSETI | Optical SETI |
| ASD(HA) | (U.S.) Assistant Secretary Of Defense (Health Affairs) |
| YC | Yoctocoulomb |
| MOP | Macau Pataca (ISO 4217 Currency Code) -Measure Of Performance |
| G5 | Generation Five PowerPC Microprocessor -Assistant Chief-of-Staff |
| EMT | Emergency Medical Technician |
| PATH | Port Authority Trans-Hudson |
| J8 | Joint Force Structure |