积水性脊髓膜突出：脊柱有缺损，脊髓膜及脊髓组织从缺损处突出，形成一充满液体的囊- bonelet
- Bonhoeffer's symptom
- Bonine
- Bonnet's capsule, sign
- Bonnier's syndrome
- Bonwill crown, triangle
- book-lung
- boomslang
- Boophilus
- Booponus
- booster
- boot
- bootstrap
- boracic acid
- borate
- borated
- borax
- borborygmus
- border
- borderline
- Bordet
- Bordetella
- Bordet-Gengou agar (culture medium), bacillus, phenomenon (reaction)
- Bordet's phenomenon, test
- boric acid