noun
stoppage time; injury time; added time
In sports, especially soccer, the extra minutes added at the end of a half to compensate for stoppages.
wasei-eigo (Japanese-coined English), from loss time
ロスタイムに同点ゴールが決まった。
An equalizer was scored in stoppage time.
noun
lost time; wasted time
General use for time that has been lost or wasted, not limited to sports.
渋滞でかなりのロスタイムが発生した。
We lost a lot of time due to the traffic jam.