| Abbreviation | Definition |
|---|---|
| BCS | Bardeen Cooper Schriefer |
| BDD | Binary decision diagram |
| BDE | Block Diagram Editor |
| BDEV | Behavior-level DEViation |
| BDMA | BenzylDiMethylAmine |
| BDMR | Basic Daily Mess Rate |
| BDO | Bi-Directional Override |
| BDR | Blocking Dynamic Range |
| BDS | Brownian Dynamics Simulation |
| BE | Band Edge |
| BE | Bound Energy |
| BE | Bound Exciton |
| BE | Boundary Element |
| BEAM | Bass Electric Acoustic Music |
| BEAM | Biology, Electronics, Aesthetics, and Mechanics |
| BEAMA | British Electrotechnical and Allied Manufacturers' Association |
| BEAR | Bureau of Electronic and Appliance Repair |
| BEC | Bandera Electric Cooperative |
| BEC | Barely Enough Current |
| BEC | Base, Emitter, and Collector |