| Meaning | Category |
| Badu Island, Queensland, Australia | Regional->Airport Codes |
| Base Development Doctrine | Governmental->Military |
| Baseline Definition Document | Governmental->NASA |
| Behavior Driven Development | Computing->Software |
| Binary Decision Diagram | Computing->Software |
| Binary Dialog Definition | Computing->General |
| Blog Dysmorphic Disorder | Internet->Chat |
| Body Dysmorphic Disorder | Medical->Physiology |
| Browser Definition Data | Computing->Networking |
| Business Desktop Deployment | Computing->Hardware |
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