| BU | base of prism up; Bethesda unit; blood urea; Bodansky unit; bromouracil; burn unit |
|---|---|
| Bu | butyl |
| bu | bushel |
| BUA | blood uric acid; broadband ultrasonic attenuation |
| Buc, | Bucc buccal |
| BUDR | bromodeoxyuridine |
| BUDS | bilateral upper dorsal sympathectomy |
| BUE | both upper extremities |
| BUF | buffalo [rat] |
| BUG | buccal ganglion |