A facility on a device, machine, etc., which automatically repeats an operation; specifically a function on a tape player, digital music player, etc., which automatically repeats the track or sequence of tracks just played; the setting which enables this.
Origin
1960s; earliest use found in Science.
Definition of auto-repeat in US English:
auto-repeat
nounˈɔːtə(ʊ)rɪˌpiːt
A facility on a device, machine, etc., which automatically repeats an operation; specifically a function on a tape player, digital music player, etc., which automatically repeats the track or sequence of tracks just played; the setting which enables this.