| Acronym | Meaning |
 | CSERIAC | (U.S. DoD) Crew Systems Ergonomics Information Analysis Center |
| RBCI | Radio Based Combat Identification |
| CUB | Cuba (ISO 3166 Trigram) |
| TBGRI | Tropical Botanic Garden And Research Institute (India) |
| RUC | Royal Ulster Constabulary |
| TN | Tennessee (postal Symbol) - Teranewton - Tonga (FIPS 10-4 Country Code) - Tunisia (ISO 3166 Digram) |
| SFOB | Special Forces Operations Base |
| CBR | Case-Based Reasoning |
| RIP | Relief In Place -requiesca[n]t In Pace (Latin For May He/she/they Rest In Peace) |
| ROS | Reactive Oxygen Species |
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