China 
Africa 
- Distress
- Distress tolerance
- Distribution coefficient
- Distribution constant
- Distribution half-life
- Distributive justice
- Distributive shock
- Disuccinimidyl suberate
- Disulfide
- Disulfide bonds
- Disulfiram
- Disulfiram-alcohol reaction
- Disulfoton
- Diterpene alkaloids
- Diterpenes
- Diterpenoids
- Dithiocarbamate
- Dithioerythritol
- Dithiol
- Dithiolane
- Dithranol
- Dithymoquinone
- Ditran
- Dityrosine
- Diuresis
- Diuretics
- Diurnal animal
- Diurnal enuresis
- Diurnal mood variation
- Diurnal rhythm
- Diuron
- Divergent evolution
- Divergent strabismus
- Diversion colitis
- Diversity of species
- Diverticular disease
- Diverticulitis
- Diverticulosis
- Diverticulum
- Divided consciousness
- Diving bell
- Diving reflex
- Divinylbenzene
- Dix-Hallpike test
- Dixyrazine
- Dizocilpine
- Dizocilpine maleate
- Dizygotic twins
- Dizziness
- DnaG
- DnaS
- Do not resuscitate
- Doan's
- Docetaxel
- Docking protein
- Docosahexaenoic acid
- Docosanol
- Docosapentaenoic acid
- Doctor shopping
- Doctor-patient relationship
- Doctors of Osteopathic Medicine
- Docusate sodium
- Dodecaborate
- Dodecanal
- Dodecylbenzene
- Dodo bird verdict
- Doege-Potter syndrome
- Dohle bodies
- Dolasetron
- Dolichocephaly
- Dolichol
- Dolichol phosphate
- Dolichostenomelia
- Dolomite
- Dolorimeter
- Dolutegravir
- Domains of unknown function
- Domestic violence
- Dominant gene
- Dominant inheritance
- Dominant response
- Domoic acid
- Domperidone
- Donepezil
- Donnan potential
- Donohue syndrome
- Donor lymphocyte infusion
- Donor-specific antibody
- Door to balloon
- Door-to-balloon
- Dopa
- Dopa decarboxylase inhibitors
- Dopachrome
- Dopamine
- Dopamine agonists
- Dopamine antagonists
- Dopamine beta hydroxylase
- Dopamine dysregulation syndrome
- Dopamine hypothesis
- Dopamine hypothesis of schizophrenia
- Dopamine receptor
- Dopamine receptor D1
- Dopamine receptor D2
- Dopamine reuptake inhibitors
- Dopamine therapy
- Dopamine transporter
- Dopamine β-hydroxylase
- Dopamine-responsive dystonia
- Dopaminergic
- Dopaminergic pathways
- Dopexamine
- Doping
- Doppler echocardiography
- Doppler ultrasonography
- Doppler ultrasound
- Doppler velocimetry
- Dor procedure
- Dorea
- Dorello's canal
- Doripenem
- Dormancy
- Dornase alfa
- Dorsal anterior cingulate cortex
- Dorsal aorta
- Dorsal artery of the penis
- Dorsal cochlear nucleus
- Dorsal column
- Dorsal column nuclei
- Dorsal horn
- Dorsal intercalated segment instability
- Dorsal interossei of the hand
- Dorsal interosseous muscle
- Dorsal lip
- Dorsal lobe
- Dorsal longitudinal fasciculus
- Dorsal mesentery
- Dorsal motor nucleus
- Dorsal nasal artery
- Dorsal nerve of the clitoris
- Dorsal nerve of the penis
- Dorsal rami
- Dorsal raphe nucleus
- Dorsal respiratory group
- Dorsal root
- Dorsal root ganglia
- Dorsal root ganglion
- Dorsal scapular artery
- Dorsal scapular nerve
- Dorsal slit
- Dorsal spinocerebellar tract