- distribution transformer
- distribution zone
- distributive faulting
- distributive lattice
- distributor
- distributor cam
- districhiasis
- district centre
- disturb
- disturbance voltage
- disturbed sample
- directional antenna
- directional loudspeaker
- directional reception
- directive
- directivity
- directivity factor
- directory entry
- directory link
- directory mask
- directory only
- directory tree
- directrix
- dirigible
- dirt
- dirt collector
- dirt particle
- dirt parting
- dirtmoving
- dirty cargo
- dirty water
- disable module
- disadvantage
- disagreement
- disalignment
- disappear
- disappearing fold
- disc
- disc anode
- disc blade
- disc brake
- disc clutch
- disc face
- disc grinder
- disc mill
- disc player
- disc sander
- disc signal
- disc spring
- disc winding
- discard
- discarded heat
- discern
- discharge
- discharge area
- discharge capacity
- discharge carrier
- discharge chute
- discharge coefficient
- discharge connection
- discharge current
- discharge data
- discharge ditch
- discharge door
- discharge end
- discharge fan
- discharge hydrograph
- discharge indicator
- discharge lift
- discharge manifold
- discharge nozzle
- discharge opening
- discharge pipe
- discharge port
- discharge regime
- discharge sewer
- discharge spout
- discharge system
- discharge time
- discharged
- discharged water
- discharging
- discharging arch
- discharging site
- disciple
- discipline
- disclose
- discoidal
- discolor
- discoloration
- discolouration
- discone antenna
- disconnect
- disconnect link
- disconnect relay
- disconnect signal
- disconnectable clutch
- disconnecting
- disconnecting key
- disconnection