What is the name for the volume that the piston displaces in the cylinder as it moves between tdc and bdc?

The volume that the piston displaces in the cylinder as it moves between Top Dead Center (TDC) and Bottom Dead Center (BDC) is called the "stroke volume" or "displacement volume." This volume is crucial for determining the engine's capacity and performance characteristics, as it indicates the amount of air and fuel that can be drawn into the combustion chamber during each cycle.