| Acronym | Meaning |
| CSSCS | Combat Service Support Control System |
| PETP | PolyEthyleneTerePhthalate |
| USNR | United States Navy Reserve |
| TLS | Timor-Leste (ISO 3166 Trigram) -Times Literary Supplement |
| H/MAD | High/Medium Altitude Air Defence (aytchmad; See Also HIMAD) |
| NFPA | National Fluid Power Association (USA) |
| STUKA | Sturzkampfflugzeug (German WWII Dive Bomber) |
| CN | Canadian National (railway) -China (ISO 3166 Digram) - Comoros (FIPS 10-4 Country Code) |
| CD1 | Cluster Of Differentiation 1 (a Small Gene Family) |
| LO | Slovakia (FIPS 10-4 Country Code) |