| Acronym | Meaning |
 | KL | Kilolitre |
| ROW | Right Of Way - Rest Of The World |
| RU | Ruthenium |
| AFJ | April Fool's Joke |
| MPFC | Medial PreFrontal Cortex |
| C4 OR C? | Command |
| WWJD | What Would Jesus Do? (see WWWD) |
| ST | Saint Lucia (FIPS 10-4 Country Code) - S?o Tom? And Prncipe (ISO 3166 Digram) |
| TMTOWTDI | There's More Than One Way To Do It (from Perl) |
| TSO | Tsonga Language (ISO 639-2 Code) |
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