osm (Czech)
Where does "osm" come from?
The Czech word 'osm' meaning 'eight' has deep roots stretching back to the Proto-Indo-European term *oḱtṓw. It evolved through Proto-Slavic as *osmь and continued into Old Czech before reaching its modern form, maintaining its original numerical significance throughout its long history.
Full etymology tree
- osm (Czech), 'eight'
- inherited osm (Old Czech), 'eight'
- inherited *osmь (Proto-Slavic), 'eight'
- inherited *aśtṓni (Proto-Balto-Slavic)
- inherited *oḱtṓw (Proto-Indo-European), 'eight'
- inherited *aśtṓni (Proto-Balto-Slavic)
- inherited *osmь (Proto-Slavic), 'eight'
- inherited osm (Old Czech), 'eight'
Ancestors
- osm (Old Czech)
- *osmь (Proto-Slavic)
- *oḱtṓw (Proto-Indo-European)
Updated July 2026
Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris