- die plate
- die set
- die shoe
- die stamping
- die welding
- die-cast
- dielectric capacitance
- dielectric conductance
- dielectric fatigue
- dielectric heating
- dielectric induction
- dielectric loss
- dielectric polarization
- dielectric rigidity
- dielectric soak
- dielectric strength
- dielectric waveguide
- dielene
- diene
- diesel
- diesel motor
- diesel oil
- diet problem
- dietary fibre
- diethyl
- difference
- difference frequency
- different
- differentiable function
- differentiable mapping
- differential
- differential amplifier
- differential circuit
- differential coefficient
- differential derivative
- differential discriminator
- differential encoding
- differential erosion
- differential galvanometer
- differential gear
- differential microphone
- differential protection
- differential relay
- differential rolls
- differential scatter
- depreciate
- depreciation
- depreciation cost
- depress cladding
- depressant
- depression area
- depression contour
- depression spring
- depth gauge
- depth sounder
- depthfinder
- deputy director
- dequeue
- derangement
- derating
- dereliction
- derivate
- derivation tunnel
- derived function
- derived unit
- derotation equipment
- derust
- desalinate
- desand
- descale
- descending grade
- desconnecting lever
- descriptive
- descriptive geometry
- desiccant
- desiccant material
- design
- design decision
- design discharge
- design factor
- design flood
- design frequency
- design language
- design limitation
- design loading
- design office
- design pressure
- design scheme
- design size
- design specification
- design value
- designer
- desilication
- desilver
- desilverize
- desk application
- desktop accessory
- desktop computer
- desliming screen
- desquamation