| Acronym | Meaning |
 | SPIE | Originally The Society For Photo-Optical Instrumentation Engineers (SPIE - The International Society For Optical Engineering 1981?2007 |
| OSCE | Organisation For Security And Cooperation In Europe |
| KKK | Ku Klux Klan |
| IAW | In Accordance With |
| LKA | Sri Lanka (ISO 3166 Trigram) |
| SSW | Swati Language (ISO 639-2 Code) |
| KAZ | Kazakh Language (ISO 639-2 Code) |
| SSK | Hunter-Killer Submarine (retired US Navy Hull Classification) |
| ASL | Above Sea Level - American Sign Language (also Known As Ameslan) - Age |
| OSETI | Optical SETI |
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