| Acronym | Meaning |
| MEO | Medium Earth Orbit - Most Efficient Organization |
| FN | Femtonewton |
| MEA | Maine Educational Assessment - Middle East Airlines - Millennium Ecosystem Assessment - Minimum Enroute Altitude - Mono-ethanol Amine - Multilateral Environmental Agreement |
| GIN | Guinea (ISO 3166 Trigram) -Guidelines International Network |
| WF | Wallis And Futuna Islands (ISO 3166 Digram) |
| ZG | Zettagram |
| EU | Basque Language (ISO 639-1 Code) |
| MOZ | Mozambique (ISO 3166 Trigram) |
| NA | Nauruan Language (ISO 639-1 Code) |
| PCE | PerChlorEthylene |