| Acronym | Meaning |
 | C/O | Care Of (postal Code Indicating Temporary Address Change) |
| GN | Giganewton - Guinea (ISO 3166 Digram) |
| NC3A OR NC?A | NATO Consultation |
| POTS | Plain Old Telephone Service (cf. PANS) - Postural Orthostatic Tachycardia Syndrome |
| TUC | Trades Union Congress |
| TIP | Thermal Identification Panel |
| TJK | Tajikistan (ISO 3166 Trigram) |
| SL | Slovenian Language (ISO 639-1 Code) |
| IG | Inspector General |
| MA | Master Of Arts -Madagascar (FIPS 10-4 Country Code) - Massachusetts (postal Symbol) - Megaampere - Morocco (ISO 3166 Digram) |
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