Where does “týdenek” come from?

týdenek (Czech) comes from Czech týden, from Proto-Slavic *tъjьdьnь — week.

Ancestry of “týdenek”, step by step

StepLanguageWordMeaning
1Czechtýdenweek
2Proto-Slavic*tъjьdьnьweek
Every word from Proto-Slavic *tъjьdьnь →Every word from Czech týden →