autosave

noun

1. (countable, uncountable)A software facility that saves an open document (or progress in a game, etc.) periodically to avoid the risk of data loss.

   “Thanks to autosave, I was able to recover most of my unsaved thesis after a power cut.”

2. (countable)A copy of a file or document saved automatically by such a facility.

   “Only the three most recent autosaves are preserved, to save disk space.”

verb

1. (transitive)To save (data) automatically.