turnaround — the time needed for something to be dealt with and returned

a mechanic hands car keys back to a waiting customer while pointing to the freshly repaired car behind them. The customer reaches out eagerly to receive the keys with a relieved expression. Earlier that morning, the same customer had dropped off the broken-down car with a worried face. Now the car sits gleaming with its hood closed and engine running smoothly. Other customers wait nearby checking their watches while mechanics work on their vehicles. the time needed for something to be dealt with and returned