Final answer:
In Ableton, the word used to describe the process of re-recording a part is 'overdubbing,' which involves recording new material on top of existing tracks.
Step-by-step explanation:
In Ableton, the word used to describe the process of re-recording a part is overdubbing. This is a common technique in music production where new audio material is recorded on top of existing material. In Ableton Live, a digital audio workstation, you can overdub MIDI and audio by arming a track for recording and enabling the overdub function, represented by the circular arrows icon, and then playing the new part while the existing material plays back.