What is the process called when an aircraft is moved under its own power on the ground?

The process of moving an aircraft under its own power on the ground is referred to as taxiing. During taxiing, the aircraft's engines provide the necessary thrust to maneuver on the runway or taxiways, allowing it to move from the gate to the runway for takeoff or from the runway to the gate after landing. Taxiing is an essential phase of airport operations because it allows the pilots to control the aircraft's movement and position safely.

The term "ground operation" broadly encompasses all activities that take place on the ground, which makes it too general for this specific context. Towing refers specifically to an aircraft being pulled by another vehicle, typically when it is stationary or needs to be moved without using its own power. The term "start-up" generally refers to the process of commencing the engines and systems of the aircraft, rather than the movement itself. Thus, taxiing is the precise terminology used to describe the self-powered movement of an aircraft on the ground.