- communication link
- communication management
- communication network
- communication scanner
- communication service
- communications processor
- communications signal
- combined receiver
- combiner
- combining process
- command console
- command format
- command key
- command mode
- command pointer
- command ship
- command string
- command terminator
- compaction ratio
- companded signal
- companding
- compatible type
- compensated amplifier
- compensation payment
- compensator
- complex condition
- complexity measure
- composite fuel
- composite passband
- composite separation
- compound coil
- compound disturbance
- compound modulation
- compound number
- compound string
- compressed drive
- compressed signal
- compressor
- compressor-expander
- complementary transistors
- completed call
- completion message
- complex signal
- composite wave
- compression filter
- compression technique
- computational model
- computer programme
- computer tube
- computing tool
- concatenated coding
- comparative price
- comparison definition
- comparison scale
- comparison signal
- compartmental model
- compatible operation
- compensation network
- compiler listing
- complementary block
- complex emission
- complex gate
- complex mixer
- complex wave
- compliance
- component color
- component level
- component side
- composite loss
- compound object
- compressed encoding
- compressed speech
- compression buffer
- compton scattering
- computer graphics
- computer instruction
- computer map
- computer storage
- computer system
- computer unit
- concentration stage
- concentricity error
- concessional assistance
- condenser antenna
- conditional return
- conditional value
- conduction band
- conductivity interference
- Confidence interval
- configuration restart
- congestion message
- conceptual schema
- concurrence
- concurrent operation
- conducting layer
- conductive mix
- conductivity
- conduit
- cone angle
- cone system