Win3.x

Abbreviation to describe Microsoft Windows 3.0 or 3.1, the x represents a wildcard. Other versions of Microsoft Windows, such as Microsoft Windows for Workgroups 3.11, are also often abbreviated as Win3.x. In the below picture, is an example of Microsoft Windows 3.11 Program Manager and what you'd first see when opening Windows.

• Windows 3.x and other operating systems information page.

Also see: Codename, Operating System definitions, WFW, Win9x