| Acronym | Meaning |
| BAK | Bashkir Language (ISO 639-2 Code) |
| PNH | Paroxysmal Nocturnal Hemoglobinuria - Police Nationale D'Ha?ti (French |
| SND | Standard Nomenclature Database |
| RTS | See Entry |
| CDIAC | Carbon Dioxide Information Analysis Center (see-dee-ack) |
| BRB | Barbados (ISO 3166 Trigram) -Be Right Back (Internet Chat Abbreviation) |
| EBCDIC | Extended Binary Coded Decimal Interchange Code (pronounced Eb-see-dik) (cf. BCD) |
| MUS | Mauritius (ISO 3166 Trigram) |
| MD | Mendelevium |
| IE | Interlingue Language (ISO 639-1 Code) |