| Acronym | Meaning |
| RHS | Right Hand Side - Redland High School |
| WTH | What The Hell |
| PK | Picokelvin |
| CAT | Catalan Language (ISO 639-2 Code) |
| DSD | Defence Studies Department (King's College |
| CPR | Canadian Pacific Railway - CardioPulmonary Resuscitation |
| ARWG | Army Research Working Group (are-wig) |
| BRA | Brazil (ISO 3166 Trigram) |
| KAL | Kalaallisut Language (ISO 639-2 Code) |
| SN | Shona Language (ISO 639-1 Code) |