| Acronym | Meaning |
| ZJ | Zettajoule |
| TT | Tatar Language (ISO 639-1 Code) |
| SH | Saint Helena (ISO 3166 Digram) -SONATRACH (Algerian Petroleum Company) |
| LRD | Liberian Dollar (ISO 4217 Currency Code) |
| AED | United Arab Emirates Dirham (ISO 4217 Currency Code) |
| ALAP | As Long/Late As Possible |
| AND | Andorra (ISO 3166 Trigram) |
| PL | Polish Language (ISO 639-1 Code) |
| NEO | Near-Earth Object - Non-combatant Evacuation Operations |
| Y | Yocto |