- data line
- data logger
- data map
- data origin
- data packet
- data processing
- data recorder
- data recovery
- data representation
- data set
- data sharing
- data source
- data station
- data stream
- data structure
- data tablet
- data tape
- data terminal
- data transfer
- data unavailability
- data unit
- data validation
- data warehousing
- data worksheet
- database
- database analysis
- database inquiry
- database language
- database manager
- database service
- database system
- datagram
- datum axle
- datum dimention
- datum level
- datum mark
- datum point
- daughter board
- davy lamp
- day
- day drift
- day indicator
- day water
- daylight mine
- dazzle
- DC centering
- DC component
- DC level
- de-boost
- de-emphasis
- de-energization
- de-hydrator
- de-interleave
- dead area
- dead block
- dead coil
- dead dike
- dead end
- dead joint
- dead load
- dead lock
- dead milling
- dead roasting
- dead steam
- dead well
- deadhead
- deadlock
- deadrace
- deaeration
- deafening
- dealer
- death
- debitumenization
- debounce
- debugging phase
- deburr
- decantation glass
- decantation vessel
- decarbonization
- decarbonizing
- decatize
- decaying
- decelerate
- deceleration
- deceleration lane
- deceleration time
- decentralized control
- decimal
- decimal attenuator
- decimal computer
- decimal notation
- decimal numeral
- decimal point
- decimal sequence
- decinene
- decision content
- decision problem
- deck roof
- deckle
- declarative statement