| Acronym | Meaning |
| PPM | Parts Per Million |
| FXX | Metropolitan France (ISO 3166 Trigram; Obsolete 1997) |
| PSC | Primary Somatosensory Cortex |
| ECJ | European Court Of Justice |
| AG | Aktiengesellschaft (German |
| OJ | Orange Juice - O.J. Simpson |
| AFRRI | (U.S.) Armed Forces Radiobiology Research Institute |
| HEO | Highly Elliptical Orbit |
| ICTH | Island Closest To Heaven/Hell Final Fantasy VIII |
| ECU | Ecuador (ISO 3166 Trigram) -European Currency Unit (ancestor Of The Euro) |