China 
Africa 
- Diagnostic Interview for Genetic Studies
- Diagnostic agent
- Diagnostic and Statistical Manual of Mental Disorders
- Diagnostic delay
- Diagnostic equipment
- Diagnostic imaging
- Diagnostic odds ratio
- Diagnostic overshadowing
- Diagnostic tests
- Dialectical behavior therapy
- Dialister
- Diallyl trisulfide
- Dialogical self
- Dialysate
- Dialysis
- Dialysis adequacy
- Dialysis disequilibrium syndrome
- Dialysis machine
- Dialysis tubing
- Dialyzer
- Diamine oxidase
- Diaminobenzidine
- Diaminopimelic acid
- Diaminopyrimidine
- Diamond-Blackfan anemia
- Diamond-blackfan anemia
- Diamondoid
- Diamorphine
- Dianion
- Dianisidine
- Diapause
- Diapedesis
- Diaper
- Diaper dermatitis
- Diaper rash
- Diaphoresis
- Diaphragm
- Diaphragm injury
- Diaphragm muscle
- Diaphragm pacing
- Diaphragma sellae
- Diaphragmatic excursion
- Diaphragmatic pacemaker
- Diarrhea
- Diarrhoea
- Diary studies
- Diarylquinoline
- Diaschisis
- Diastase
- Diastasis
- Diastasis recti
- Diastema
- Diastematomyelia
- Diastereoisomers
- Diastereomers
- Diastolic
- Diastolic blood pressure
- Diastolic depolarization
- Diastolic dysfunction
- Diastolic function
- Diastolic heart failure
- Diastolic heart murmur
- Diastolic pressure
- Diastrophic dysplasia
- Diathermy
- Diathesis
- Diathesis stress model
- Diathesis-stress model
- Diatomaceous earth
- Diatomic molecules
- Diatomite
- Diatrizoate
- Diatrizoic acid
- Diauxic growth
- Diazepam
- Diazinon
- Diazirine
- Diazo
- Diazolidinyl urea
- Diazonium compound
- Diazoxide
- Dibenzazepine
- Dibenzofuran
- Dibenzothiophene
- Dibenzoxepin
- Dibutyl phthalate
- Dibutyl sebacate
- Dicarbonate
- Dicarboxylic acid
- Dicarboxylic acids
- Dicentric chromosome
- Dicer
- Dichloralphenazone
- Dichloramine
- Dichlorine
- Dichlorobenzene
- Dichlorodiphenyltrichloroethane
- Dichloroethane
- Dichloromethane
- Dichlorophen
- Dichlorophenolindophenol
- Dichlorvos
- Dichotic listening
- Dichotomous thinking
- Dichroa febrifuga
- Dichromacy
- Dichromatic
- Dicistroviridae
- Diclazepam
- Diclofenac
- Dicloxacillin
- Dicofol
- Dicoumarol
- Dicrocoelium dendriticum
- Dicrotophos
- Dictyate
- Dictyostelium
- Dictyostelium discoideum
- Dicyclohexylcarbodiimide
- Dicyclohexylurea
- Dicyclomine
- Dicyclopentadiene
- Didanosine
- Dideoxynucleotides
- Dieldrin
- Dielectric heating
- Dielectric spectroscopy
- Dielectrophoresis
- Diencephalic syndrome
- Diencephalon
- Dienes
- Dienestrol
- Dienogest
- Dienone
- Dientamoeba
- Dientamoeba fragilis
- Diesel exhaust
- Diester
- Diestrus
- Diet
- Diet and cancer
- Dietary Supplement Health and Education Act of 1994
- Dietary fat
- Dietary fiber
- Dietary guidelines
- Dietary indiscretion
- Dietary inflammatory index
- Dietary management
- Dietary protein
- Dietary reference intake