| Acronym | Meaning |
| ZS | Zettasecond |
| CAFAD | Combined Arms For Air Defence |
| OR | Oriya Language (ISO 639-1 Code) |
| RARDE | UK Royal Armament Research And Development Establishment (1962?1991) |
| MACE | Multi-Agent Computing Environment |
| OLS | Operational Linescan System |
| SVM | Support Vector Machine (artificial Intelligence) |
| BRB | Barbados (ISO 3166 Trigram) -Be Right Back (Internet Chat Abbreviation) |
| DNR | Do Not Resuscitate |
| ISB | Intermediate Staging Base |