PD stands for
- '''Pure Data'''
Pd is a real-time software system for live musical and multimedia performances. It can be used to manipulate in realtime many kinds of data such as sound, MIDI data and (3D)-graphics.
- '''Public Domain'''
Pd and, by the time of this writing, all written software (PdLibraries) related to Pd are Open Source, therefore you may use and and modify it at your will. See the PdLicense for details.