The Free On-line Dictionary of Computing (30 December 2018):

Windows Millennium Edition
Windows ME

    (Windows ME) An update of Microsoft
   Windows 98, released in 2000.  ME included updates of
   packaged software and new software such as Windows Media
   Player 7, Windows Movie Maker.  It also has an updated
   user interface with new colours and icons, but few major
   changes.  Windows ME was followed by Windows XP.

   (2003-05-13)