| Acronym | Meaning |
| PWLC | PieceWise Linear And Concave/Convex (describing A Mathematical Function) |
| SSK | Hunter-Killer Submarine (retired US Navy Hull Classification) |
| TACDAR | Tactical Detection And Reporting |
| UIC | University Of Illinois At Chicago |
| GIN | Guinea (ISO 3166 Trigram) -Guidelines International Network |
| ZS | Zettasiemens |
| NZL | New Zealand (ISO 3166 Trigram) |
| CME | Coronal Mass Ejection (usually Sun) |
| KPVT | Krupnokaliberniy Pulemet Vladimorova Tankoviy (Russian ???? ???????????????? ??????? ??????????? ???????? |
| GFE | Girl Friend Experience (used In Escort Services) - Good Faith Estimate - Government Furnished Equipment |