- cross-coupled
- cross-cut
- cross-domain
- cross-fade
- cross-post
- cross-reference
- cross-root
- crossed
- crossed homomorphism
- crossfooting
- crossover cable
- crosspost
- crosstalk coupling
- crosstalk loss
- crow plate
- cruciform
- crude guess
- crude sampling
- crunode
- crushed sand
- cryogenic film
- cryotron
- cryptanalysis
- crypto precaution
- crypto-text
- cryptographic
- cryptographic technique
- cryptography
- cryptology
- crystal amplifier
- crystal filter
- crystal mixer
- crystal resonator
- crystal transducer
- crystalline particle
- cubature
- cubcomplex
- cubic
- cubic determinant
- cubic equation
- cubic form
- cubic measure
- cubic octahedron
- cubic surd
- cubic transformation
- cubical dilatation
- cubicle
- cuboid
- cue sheet
- cumulative area
- cumulative data
- cumulative index
- cumulative indexing
- cumulative principal
- cumulative remainder
- cumulative total
- curly bracket
- currency format
- current address
- current attribute
- current cell
- currency sign
- currency symbol
- current
- current amplification
- current attenuation
- current bibliography
- current compensation
- current conditions
- current coordinates
- current device
- current directory
- current document
- current drive
- current element
- current feedback
- current form
- current gain
- current generator
- current graph
- current heap
- current host
- current integrator
- current intensity
- current joystick
- current library
- current line
- current loop
- current map
- current mode
- current noise
- current order
- current page
- current point
- current pointer
- current position
- current production
- current rank
- current record
- current regulator