| Acronym | Meaning |
 | STFU | Shut The Fuck Up |
| CHN | China (ISO 3166 Trigram) |
| ERS | Earth Resources Survey |
| OS | Osmium |
| RUN | Kirundi Language (ISO 639-2 Code) |
| MCC | Marylebone Cricket Club - Mission Control Centre - Movement Control Centre |
| AG | Attogram |
| CSIS | Canadian Security Intelligence Service (seessiss) -(U.S.) Center For Strategic & International Studies |
| CES | Czech Language (ISO 639-2 Code) |
| SJ | Svalbard And Jan Mayen (ISO 3166 Digram) -Societas Iesu (Latin: The Society Of Jesus |
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