| Acronym | Meaning |
| FAI | F?d?ration A?ronautique Internationale (French |
| III | Sichuan Yi Language (ISO 639-2 Code) |
| NER | Niger (ISO 3166 Trigram) |
| ZM | Zeptometre |
| CHRS | Canadian Heart Rhythm Society |
| FSF | Free Software Foundation |
| ORI | Oriya Language (ISO 639-2 Code) |
| NETL | (US) National Energy Technology Laboratory |
| OA | Operational Analysis |
| ECM | Electronic Counter-Measures - Enterprise Content Management |