- diabetes insipidus
- dogged
- double dutch
- deputize
- deepen
- dens
- dipsomania
- decant
- disharmony
- decode
- discompose
- dignitary
- digital computer
- diagnostics
- democratize
- dropper
- diminish
- davenport
- demography
- diploma
- disarrange
- discomfit
- duodenal ulcer
- dumping
- darning
- data processing
- double chin
- diabetic diet
- disgruntled
- diagnostician
- doom and gloom
- diocese
- decapitate
- dermatologist
- devoid
- decelerate
- dry ice
- distend
- domineering
- dowager
- declamatory
- daunt
- demarcate
- defame
- dirge
- domestic animal
- devastate
- diaphanous
- dextrocardia
- desktop publishing