| Acronym | Meaning |
 | UESAC | Uppsala-ESO Survey Of Asteroids And Comets |
| NJ | Nanojoule |
| EPR | European Pressurised [Nuclear] Reactor |
| YI | Serbia And Montenegro (deprecated FIPS 10-4 Country Code |
| GIF | Graphics Interchange Format (pronounced Jif) |
| ISTS | Intel Science Talent Search |
| SDRAM | Synchronous Dynamic Random-Access Memory (ess-dee-ram) |
| AK | Attokelvin |
| UNIDO | United Nations Industrial Development Organization |
| HOT | Highly Optimised Tolerance |
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