- clear plasma
- clearback signal
- clearing lamp
- click noise
- client workstation
- clipper
- clipper diode
- clipping region
- clock cycle
- clock ensemble
- clock frequency
- clock stability
- clocked coding
- clocking pulse
- closure
- closure operator
- cloverleaf antenna
- cluster size
- clustering effect
- clustering principle
- clutter gating
- CMI
- CMOS crosspoint
- co-polar
- CO2 laser
- coarse time
- coast station
- coastal refraction
- coastal region
- coated paper
- coaxial cassette
- coaxial cavity
- coaxial diode
- coaxial feeder
- coaxial magnetron
- coaxial resonator
- coaxial stub
- coaxial switch
- clipboard
- clock
- clock circuit
- clock comparator
- clock data
- clock extraction
- clock generator
- clock period
- clock synchronization
- clocking error
- clocking sequence
- closed block
- closed line
- closed region
- closest approach
- closing flow
- cochannel
- code 11 operator
- code device
- code equipment
- code frame
- code hole
- code language
- code map
- code mapping
- code network
- code number
- code sign
- code statement
- code system
- code word
- code-transparent
- coded character
- coded document
- coded graphics
- coded identification
- coded image
- coded information
- coded mask
- coded message
- coded number
- coded order
- coded program
- coded representation
- coded transmission
- coding rate
- coding rule
- coding schema
- coding strategy
- coding system
- coding theorem
- coding time
- coefficient unit
- coercivity
- coherence frequency
- coherent demodulation
- coherent detection
- coherent modulation
- coherent transmission
- coherent wave
- cold deck
- cold impedance