- core map
- core plan
- core program
- core router
- core saturation
- core size
- core software
- core stack
- core store
- core system
- core technology
- core widget
- corner condition
- corner cut
- corner separator
- cornoid
- cornu spiral
- corollary equation
- corona
- corona unit
- corporation
- corpus
- correct
- correctable
- corrected
- corrected moment
- correcting signal
- correction card
- correction channel
- correction computation
- correction computing
- correction data
- correction key
- correction signal
- correction vector
- corrective
- corrective delay
- corrective lag
- corrective maintenance
- corrective network
- corrector
- corrector formula
- correlation diagram
- correlation method
- correlation ratio
- correlation tool
- correlative figure
- correlatogram
- correlatograph
- correlator
- correspondence
- correspondent entities
- corrigendum
- corrosion rate
- corrupt
- corrupt file
- cosecant curve
- coset space
- cosimplicial object
- cosine rule
- cosmical radiation
- cosmology
- cotangent
- countable base
- counter dial
- counter domain
- counter timer
- counter wheel
- counter-compact
- counter-example
- counting circuit
- counting loop
- counting operation
- country planning
- couple
- coupled
- coupled system
- coupling cable
- coupling constant
- coupling factor
- coupling loss
- coupling mechanism
- course
- covariance
- covariant completion
- covariant functional
- covariant system
- covariant tension
- coverage extent
- covering
- covering group
- covering space
- covert channel
- corrupted file
- corruption
- coset
- cosine
- cosine integral
- cosine law
- cosine sum