| BI | Behavior Identity |
|---|---|
| BI | background interval; bacterial or bactericidal index; base-in [prism]; basilar impression; Billroth I [operation]; biological indicator; biotehnology infomatics; bodily injury; bone injury; bowel impaction; brain injury; burn index |
| Bi | bismuth |
| BIA | biolectric impedance analysis; bioimmunoassay |
| BIAC | Bioinstrumentation Advisory Council |
| BIB | biliointestinal bypass; brought in by |
| biblio | bibliography |
| BIBRA | British Industrial Biological Research Association |
| BIBRA | British Industrial Biological Research Association |
| BIC | blood isotope clearance |