- CDF
- ceased subscriber
- catastrophe
- catergol
- cathode modulation
- CCD filter
- cease acknowledge
- celestial horizon
- celestial mechanics
- cell boundary
- cell change
- cell charge
- cellular
- cellular array
- cellular block
- cellular network
- cellular structure
- cellular system
- cellular technique
- center image
- central control
- centralized control
- centre frequency
- centred carrier
- Centrex system
- ceramic
- census
- center frequency
- center hole
- central life
- central storage
- central track
- centralized system
- ceramic wafer
- chain field
- chain operation
- chained addressing
- chained list
- channel
- channel bandwidth
- channel control
- channel flow
- character byte
- character check
- character comparison
- character constant
- character cycle
- character design
- character field
- character selection
- character translation
- characteristic velocity
- charge amplifier
- charge carrier
- charge composition
- charge cycle
- charge main
- charger unit
- charging equipment
- charging information
- charting machine
- check bus
- checkout time
- checkpoint tape
- centralized association
- centralizing office
- centrifugal potential
- ceramic capacitor
- cesium phototube
- chad
- chain data
- chain mapping
- change sign
- changeover distance
- channel allocation
- channel bank
- channel code
- channel denial
- channel designator
- channel doping
- channel equipment
- channel failure
- channel filter
- channel loading
- channel noise
- channel occupancy
- channel request
- channel separation
- channel switch
- channel table
- channel translation
- channeling
- character generation
- character identifier
- character relation
- character rotation
- character space
- character switch
- charge
- charge transfer