- doughnut chart
- down time
- download
- downloading prompt
- downloading time
- downsizing
- downstream
- downstream face
- dozen
- DPCX instruction
- draft copy
- draft quality
- drafting
- drafting package
- drag lock
- dragging device
- draw
- draw bar
- draw program
- drawing object
- drawing program
- drawing rate
- drift computer
- drift rate
- drift time
- drift velocity
- drifting characters
- driver
- driving shaft
- driving software
- drop cap
- dropout type
- drum file
- drum lathe
- drum mark
- drum plotter
- drum unit
- double buffering
- double card
- double carry
- double constant
- double cusp
- double dabble
- double entry
- double grade
- double integral
- double keying
- double modulation
- double precision
- double ratio
- double register
- double sampling
- double screen
- double space
- double spacing
- double wave
- double-circuit
- double-click
- doubleword
- doubling values
- doubly
- doubly perspective
- Dousol process
- down
- down arrow
- down cross
- down-line
- downgrade version
- downlink
- downward bias
- downward compatibility
- downward reference
- draft
- draft mode
- draftsman
- drag
- drag select
- dragging
- dragline scraper
- drainage engineer
- draw tool
- drawing
- drawing tool
- drawn button
- drift space
- drift transistor
- drifter drill
- drip ring
- drive array
- drive characteristic
- drive light
- drive number
- drive pulse
- driven place
- driving chisel
- driving frequency
- driving unit
- drop shadow
- dry contact
- dry pair