- closed subspace
- closed surface
- closed system
- closed transformation
- closed traverse
- closed window
- closedown
- closeness
- closing tag
- cobordism
- cobordism group
- coboundary
- code
- code area
- code character
- code chart
- code check
- code conversion
- code converter
- code cracker
- code delay
- code design
- code device
- code efficient
- code element
- code error
- code extension
- code field
- code group
- code holes
- code letter
- code machine
- code management
- code name
- code page
- code parameter
- code pattern
- code policy
- code programming
- code reader
- code recorder
- code regenerator
- code register
- code rule
- code scanner
- code scheme
- code segment
- code sensitivity
- code sheet
- code sign
- code signal
- code size
- code snippet
- code table
- code tract
- code transparence
- code value
- code violation
- code walk
- code-bit
- code-independent
- code-text
- codeclination
- coded
- coded data
- coded decimal
- coded document
- coded element
- coded font
- coded form
- coded image
- coded impulse
- coded message
- coded order
- coded overlay
- coded representation
- coded sequence
- coded set
- coded signal
- coded stop
- coded word
- coder
- coderived functional
- coding
- coding disk
- coding error
- coding form
- coding scheme
- coding sequence
- coding sheet
- coding system
- coding table
- coding theory
- coefficient field
- coefficient matrix
- coefficient region
- coefficient unit
- coerce
- coercive
- coerciveness