Where does “tǫtьňь” come from?

tǫtьňь (Proto-Slavic) comes from Proto-Indo-European tenh₂-, from Proto-Indo-European ten- — to stretch, to extend.

Ancestry of “tǫtьňь”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeantenh₂-to stretch, to extend
2Proto-Indo-Europeanten-to stretch, to extend
Every word from Proto-Indo-European ten- →Every word from Proto-Indo-European tenh₂- →