| Acronym | Meaning |
| KW | Cornish Language (ISO 639-1 Code) |
| XE | Xenon |
| MTBF | Mean Time Between Failures |
| RPN | Reverse Polish Notation |
| SM | Sado-Masochism -San Marino (ISO 3166 And FIPS 10-4 Country Code Digram) -Soldier's Manual -Submarine Minelayer (US Navy Hull Classification) |
| VV&A | Verification, Validation, And Accreditation |
| AFIS | Automated Fingerprint Identification System - American Forces Information Service |
| PS | Pashto Language (ISO 639-1 Code) - Picosecond |
| NBACC | U.S. National Biodefense Analysis And Countermeasures Center (enn-back) |
| LWR | Laser Warning Receiver |