| Acronym | Meaning |
 | DB | Data Bus |
| DB | Deadband |
| DB | Decibel |
| DB | Design Baseline |
| DB | Distribution Box |
| DB | Dry Bulb |
| DBC | Data Bus Control |
| DBC | Data Bus Coupler |
| DBC | Data Bus Coupler |
| DBCI | DB With Respect To A Circular Polarized Antenna |
| DBE | Data Bus Element |
| DBFN | Data Base File Number |
| DBFN | Data Bus File Number |
| DBFN | DBGData Bus Group |
| DBGMP | Data Bus Generation And Maintenance Package |
| DBGMP | Data Bus Isolation Amplifier |
| DBGMP | DBIData Bus Interface Unit-Launch |
| DBGMP | DBIAData Bus Interface Adapter |
| DBGMP | DBIUData Bus Interface Unit |
| DBGMP | DBLDouble |
| DBGMP | DBMData Base Management |
| DBGMP | DBMDecibels Referred To I Milliwatt |
| DBGMP | DBNData Bus Network |
| DBGMP | DBPDesign Baseline Program |
| DBGMP | DBRNData Bank Release Notice |
| DBGMP | DBSData Base System |
| DBGMP | DBURData Bank Update Request |
| DBGMP | DBWData Bus Wire |
| DBGMP | DBWDecibels Referred To I Watt |
| DBIA | Data Bus Isolation Amplifier |
| DBN | Data Bus Network |
| DC | Data Coordinator |
| DC | DCADefense Communication Agency |
| DC | DCAADefense Contract Audit Agency |
| DC | DCARDesign Corrective Action Report |
| DC | DCASData Collection And Analysis System |
| DC | Defense Contract Administration Services |
| DC | Design Change Authorization |
| DC | DeveloPment-Center |
| DC | Digital Command Assembly |
| DC | Direct Current |
| DC | Display Coupler |
| DC | Distribution Control Assembly |
| DCC | Data ComPutation Complex |
| DCC | Data Computation Complex (JSC) |
| DCC | DCCUDigital Command And Control Unit |
| DCC | Digital Communications And Control Unit |
| DCC | Display COMPuter Control Unit |
| DCC | Document Control Center |
| DCIB | Data Communication InPut Buffer |
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