| Abbreviation | Definition |
|---|---|
| BNCT | Boron Neutron Capture Therapy |
| BNL | Brookhaven National Laboratory |
| BOMD | Born Oppenheimer Molecular Dynamics |
| BP | Before Polarization |
| BP | Breaking Point |
| BPC | Boost Pressure Control |
| BPM | Beam Position Monitor |
| BPPG | Basal Plane Pyrolytic Graphite |
| BPPI | Biophysics of Proteins and Protein Interactions |
| BPPP | Breakthrough Propulsion Physics Program |
| BPPP | Breakthrough Propulsion Physics Project |
| BPS | Bogomolnyi-Prasad-Sommerfield |
| BPSD | Biological Physics Structure and Design |
| BPTL | Bringing Physics to Life |
| Bq | Becquerel |
| BQP | Bounded-error Quantum Polynomial time |
| BR | Barnes Reinecke |
| BR | Bubble Renormalized |
| BRCP | Basic Research Community for Physics |
| BRP | Barrier Ring Position |