| RB | radiation burn; rating board; rebreathing; reticulate body; retinoblastoma; right bronchus; right bu... |
|---|---|
| AVCx | atrioventricular circumflex branch |
| BEB | Biomedical Engineering Branch [of US Army] |
| br | boiling range; brachial; branch; branchial; breath; brother |
| BRAO | branch retinal artery occlusion |