| Acronym | Meaning |
 | TWI | The Welding Institute |
| CHV | Chuvash Language (ISO 639-2 Code) |
| STH | Sonic The Hedgehog |
| KPNO | Kitt Peak National Observatory |
| JA | Japan (FIPS 10-4 Country Code) |
| PSG | Pacific Seabird Group |
| STK | Satellite Tool Kit |
| ISB | Intermediate Staging Base |
| JOD | Jordanian Dinar (ISO 4217 Currency Code) |
| AYU | As Yet Unknown |
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