An abbreviation for Continuous Controller or Control Change number. The CC Number is a numbered MIDI message that’s in many cases permanently assigned to a particular parameter. With MIDI, you can change many settings with foot pedals, modulation wheels, switches, breath controllers, data increment/decrement buttons and sliders, etc. MIDI can transmit such changes with the Control Change set of messages. A MIDI Control Change number is followed by a value that sets the parameter in the MIDI device that receives it.
