- deamination
- disqualification
- diagonalisation
- drudgery
- dementia praecox
- depilate
- defuse
- drawing paper
- dosimeter
- declinometer
- death bell
- dermatoglyphics
- dioxide
- device driver
- dragoman
- desiccant
- doyen
- discrete
- drawing table
- decoder
- day camp
- diagrammatic
- disk cache
- death warrant
- Desmanthus
- decolorise
- derived function
- direct sum
- dexterity
- diluvian
- doggy
- desperado
- decalogue
- dichromatism
- defloration
- dingo
- drag coefficient
- dichotomy
- digestive tract
- dog house
- dew point
- downward
- downsizing
- decasyllable
- dine
- deacon
- disillusion
- Decapoda
- diamagnet
- discursive