| Acronym | Meaning |
 | CDF | California Department Of Forestry [and Fire Protection] - Common Data Format -Democratic Republic Of Congo Franc Congolais (ISO 4217 Currency Code) |
| TSCA | Toxic Substances Control Act (tosca) |
| HIM | His (or Her) Imperial Majesty |
| CW | Continuous Wave (laser) -Cook Islands (FIPS 10-4 Territory Code) |
| IP | Clipperton Island (FIPS 10-4 Territory Code) -Initial Point - Intellectual Property - Internet Protocol |
| PY | Paraguay (ISO 3166 Digram) - Person-Year -Portsmouth Yardstick |
| COFT | Conduct Of Fire Trainer (military) |
| OS | Ossetic Language (ISO 639-1 Code) |
| MBT | Main Battle Tank |
| K | Kelvin - Potassium (Latin Kalium) - Tanker (aircraft Designation Code) |
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