Definition from Wiktionary, the free dictionary
- Abbreviation of Weltmeisterschaft (“world championship, World Cup”).
- The normal plural is WMs.
- The spelling WM’s with an apostrophe is not official standard, but is often seen. The unchanged plural WM is rare.
WM f (genitive WM, no plural)
- (apartment listing) Abbreviation of Warmmiete (“rent including heating costs”).