Definition of log off (or out) in US English:

log off (or out)

phrasal verb

  • Go through the procedures to conclude use of a computer, database, or system.

    • ‘Remember that your computer will still log off automatically if you do not use use it for more than 30 minutes.’
    • ‘If that user logs off the workstation, the TP User becomes the user who has been logged onto the system the longest.’
    • ‘She logs off and logs back on and she gets a message that her account is locked out.’