| Acronym | Meaning |
| PDN | Pull-Down Network |
| INA | Interlingua Language (ISO 639-2 Code) |
| RATELO | Radiotelephone Operator |
| JSS | Joint Support Ship |
| C4I OR C?I | Command |
| OK | Oklahoma (postal Symbol) -oll Korrect (facetious Alteration Of All Correct |
| CJD | Chronological Julian Day - Creutzfeldt-Jakob Disease |
| FP | French Polynesia (FIPS 10-4 Territory Code) |
| BBC | Big Black Cock |
| SGP | Singapore (ISO 3166 Trigram) |