| Acronym | Meaning |
 | AAS | Advanced Automation System - American Astronomical Society (double-A-S) |
| UNIDO | United Nations Industrial Development Organization |
| LVL | Latvian Lats (ISO 4217 Currency Code) |
| SNP | Single Nucleotide Polymorphism |
| 4D | Four-dimensional (usually Three Spatial Plus One Temporal Dimension |
| JAG | Judge Advocate General (military Law) |
| OAC | On Approved Credit |
| AA | Attoampere |
| ASR | Anti Slip Regulation |
| EK | Equatorial Guinea (FIPS 10-4 Country Code) - Exakelvin |
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