| Acronym | Meaning |
| KK | Kazakh Language (ISO 639-1 Code) |
| NR | Nauru (ISO 3166 And FIPS 10-4 Country Code Digram) |
| AY | Antarctica (FIPS 10-4 Territory Code) |
| TZC | Tetrazolium Chloride |
| UDDI | Universal Description |
| CALABARZON | A Region In The Philippines: CAvite |
| ACM | Many |
| KUW | Kuwait (UNDP Country Code) |
| SEN | Senegal (ISO 3166 Trigram) -Small Extension Node |
| IHH | Idiopathic Hypogonadotropic Hypogonadism |