| B12 | B12 |
| bacille | bacillus |
| bactéricide | bactericidal |
| bactérie | bacterium |
| bactériémie | bacteraemia |
| bactériologie | bacteriology |
| bactrim | bactrim |
| baillement | yawning |
| baisse de la libido | loss of sex-drive |
| ballonnet | balloon |
| bandage adhésif | strapping |
| bande | band |
| bandelette | band |
| barbelures de fixation | anchoring barbs |
| barbiturique | barbiturate |
| barotraumatisme | barotrauma |
| barrière hémato-encéphalique | blood-brain barrier |
| basophile | basophil |
| bassin | bedpan |
| bassinet rénal | renal pelvis |
| béance | patency |
| bec-de-perroquet | bone spur |
| becs de perroquet | lipping |
| bénéfice | benefit |
| bénin | mild |
| benzodiazépines | benzodiazepines |
| besoin impérieux | urgency |
| bêta-bloquants | beta blockers |
| Betaferon | Betaferon |
| bi-quotidien (bis in die) | BID |
| biceps | biceps muscle |
| bifurcation aortique | aortic bifurcation |
| bifurqué | bifurcated |
| bilan | workup |
| bilan de santé | check-up |
| bilan hydrique | water balance |
| biocompatibilité | biocompatibility |
| biocompatible | biocompatible |
| biofeedback | biofeedback |
| biopsie | biopsy |
| biopsie à l'emporte-pièce | punch biopsy |
| biquotidien | bid |
| bis in die, deux fois par jour | bid |
| blanchiment | clearance |
| blessure | injury |
| blessure | wound |
| boîte crânienne | cranial cavity |
| boîte de Pétri | Petri dish |
| boîtier femelle | Implant Female |
| bombement | bulge |
| bouche sèche | dry mouth |
| bouchon | plug |
| bouffée congestive | flushi |
| bouffées (vasomotrices, congestives) | flushing |
| bouffées de chaleur | hot flushes |
| bouffissure | puffiness |
| bourse | bursa |
| bourse pré-rotulienne | patellar bursa |
| bourse sus-acromiale | acromial bursa |
| bourse synoviale | synovial bursa |
| bouton d'Orient | Tashkent ulcer |
| bras | arms |
| bras atrophié | bird arm |
| brillance | brightness |
| broche | pin |
| bromocriptine | bromocriptine |
| bronchite | bronchitis |
| bronchospasme | bronchospasm |
| bruit de va-et-vient | seesaw murmur |
| brûlures mictionnelles | burning urination |
| bulbe pileux | dermal papilla |
| bulbe pileux | hair bulb |
| buprénorphine | buprenorphine |
| bursectomie | bursectomy |
| bursite | bursitis |
| but | purpose |
| butée osseuse | bone block |
| buvable | oral liquid |