- Digital medicine
- Digital microfluidics
- Digital model
- Digital pathology
- Digital pill
- Digital radiography
- Digital rectal examination
- Digital subtraction angiography
- Digital therapeutics
- Digitalin
- Digitalis
- Digitalis purpurea
- Digitonin
- Digitoxigenin
- Digitoxin
- Diglyceride
- Dignified death
- Dignity
- Digoxigenin
- Digoxin
- Digoxin toxicity
- Diguanylate cyclase
- Dihomo-γ-linolenic acid
- Dihydralazine
- Dihydroalprenolol
- Dihydroartemisinin
- Dihydrobiopterin
- Dihydrocaffeic acid
- Dihydrocapsaicin
- Dihydrocodeine
- Dihydroergotamine
- Dihydrofolate reductase
- Dihydrogen
- Dihydrogenphosphate
- Dihydrolipoamide
- Dihydrolipoamide acetyltransferase
- Dihydrolipoamide dehydrogenase
- Dihydrolipoic acid
- Dihydrolipoyl transacetylase
- Dihydromethysticin
- Dihydromorphine
- Dihydroorotate dehydrogenase
- Dihydroprogesterone
- Dihydropteridine reductase
- Dihydropteridine reductase deficiency
- Dihydropyridine
- Dihydropyridine calcium channel blockers
- Dihydropyrimidinase
- Dihydropyrimidine dehydrogenase
- Dihydropyrimidine dehydrogenase deficiency
- Dihydrosanguinarine
- Dihydrostreptomycin
- Dihydrotachysterol
- Dihydrotestosterone
- Dihydrotetrabenazine
- Dihydrouracil
- Dihydrouridine
- Dihydroxyacetone
- Dihydroxyanthraquinone
- Dihydroxylation
- Dihydroxyphenylacetic acid
- Dihydroxyphenylglycine
- Diimine
- Diisocyanates
- Diisopropyl ether
- Diisopropyltryptamine
- Diketopiperazine
- Dilaceration
- Dilatation
- Dilatation and curettage
- Dilated cardiomyopathy
- Dilated fundus examination
- Dilation and curettage
- Dilation and evacuation
- Dilators
- Dilazep
- Dill
- Dill oil
- Diloxanide
- Diloxanide furoate
- Diltiazem
- Dilute Russell's viper venom time
- Dilute solution
- Dilution assay
- Dilution cloning
- Dimebon
- Dimenhydrinate
- Dimercaprol
- Dimercaptosuccinic acid
- Dimerization
- Dimers
- Dimethoate
- Dimethyl ether
- Dimethyl fumarate
- Dimethyl sulfate
- Dimethyl sulfoxide
- Dimethyl trisulfide
- Dimethylallyl pyrophosphate
- Dimethylamphetamine
- Dimethylaniline
- Dimethylcurcumin
- Dimethyldioctadecylammonium bromide
- Dimethyldithiocarbamate
- Dimethylethanolamine
- Dimethylformamide
- Dimethylglycine
- Dimethylhydrazine
- Dimethylmercury
- Dimethylnitrosamine
- Dimethyltryptamine
- Dimethylurea
- Dimeticone
- Dimetindene
- Diminazene
- Diminazene aceturate
- Diminished responsibility
- Dimocarpus longan
- Dimorphic fungi
- Dimorphism
- Dimple sign
- Dinaciclib
- Dinitrobenzene
- Dinitrophenyl
- Dinucleotide
- Dinucleotide repeat
- Dio2
- Dio3
- Dioctyl sodium sulfosuccinate
- Diode lasers
- Diogenes syndrome
- Diol
- Dioleoyl-3-trimethylammonium propane
- Diosgenin
- Diosmectite
- Diosmin
- Dioxane
- Dioxin
- Dioxins and dioxin-like compounds
- Dioxolanes
- Dioxybenzone
- Dioxygenase
- Dip
- Dipalmitoylphosphatidylcholine
- Dipeptidase
- Dipeptidyl peptidase
- Dipeptidyl peptidase 4
- Dipeptidyl peptidase I
- Dipeptidyl peptidase IV
- Dipeptidyl peptidase-4
- Dipeptidyl peptidase-4 inhibitors