乳酸杆菌属：旧分类系统中乳杆菌科(Lactobacillaceae)乳杆菌族(Lactobacilleae)的一属细菌，由不产生孢子的厌氧性革兰氏阳性杆状菌组成，现分类归于真细菌属(Eubacterium)- dismemberment
- dismutation
- disocclude
- disodium
- disomus
- disopyramide
- disorder
- disorganization
- disorientation
- disoxidation
- dispar
- boroglycerin
- boroglycerol
- boron
- Borrelia
- borreliosis
- Borsieri's sign (line)
- Borthen's operation
- Bose's hook
- boss
- bosselated
- bosselation
- Bossi's dilator
- Bostock's catarrh (disease)
- Boston's sign