- 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
- Dietary supplements
- Diethanolamine
- Diethyl ether
- Diethyl maleate
- Diethyl phthalate
- Diethyl pyrocarbonate
- Diethylcarbamazine
- Diethylene glycol
- Diethylnitrosamine
- Diethylstilbestrol
- Diethyltoluamide
- Dieting
- Dietzia
- Dieulafoy's lesion
- Difenacoum
- Diff-Quik
- Difference gel electrophoresis
- Difference in differences
- Differential Ability Scales
- Differential Adhesion Hypothesis
- Differential Item Functioning
- Differential centrifugation
- Differential diagnosis
- Differential display
- Differential extraction
- Differential scanning calorimetry
- Differential staining
- Differential susceptibility
- Differential thermal analysis
- Differential threshold
- Differentially methylated regions
- Differentiated cell
- Differentiation
- Differentiation therapy
- Diffraction
- Diffractometer
- Diffuse Lewy body disease
- Diffuse alveolar damage
- Diffuse axonal injury
- Diffuse brain injury
- Diffuse esophageal spasm
- Diffuse idiopathic skeletal hyperostosis
- Diffuse infiltrative lymphocytosis syndrome
- Diffuse intrinsic pontine glioma
- Diffuse large B-cell lymphoma
- Diffuse optical imaging
- Diffuse panbronchiolitis
- Diffuse reflectance spectroscopy
- Diffuse unilateral subacute neuroretinitis
- Diffusers
- Diffusing capacity
- Diffusion
- Diffusion MRI
- Diffusion coefficient
- Diffusion controlled reaction
- Diffusion equation
- Diffusion flux
- Diffusion gradient
- Diffusion imaging
- Diffusion of innovation
- Diffusion of responsibility
- Diffusion tensor imaging
- Diffusion tensor magnetic resonance imaging
- Diffusion theory
- Diffusion weighted imaging
- Diffusion weighted magnetic resonance imaging
- Diffusivity
- Diflorasone
- Diflubenzuron
- Diflucortolone valerate
- Diflunisal
- Difluprednate
- Digallic acid
- Digastric muscle
- Digenea
- Digestibility
- Digestion
- Digestive enzyme
- Digestive enzymes
- Digestive juices
- Digestive system
- Digestive system disease
- Digestive tract
- Digestive tube
- Digit
- Digit span
- Digit symbol substitution test
- Digit symbol-coding
- Digital Accessible Information System
- Digital breast tomosynthesis
- Digital clubbing
- Digital detox
- Digital health
- Digital hearing aid
- Digital imaging and communications in medicine
- Digital mammography