Linux Mint Debian Edition(or LMDE) is a Linux distro which is based on Debian. The main edition of Linux mint is based on Ubuntu which itself is based on Debian. Debian is one of the oldest and most stable Linux distros out there but it’s made for general use and is not recommended for complete newbies to Linux. So Ubuntu takes the Debian code and forks it for ease of access and the main Linux Mint distro takes the Ubuntu code and tries to make it more polished and very beginner friendly. The LMDE skips the Ubuntu part and directly uses Debian code.