Where does “tā́nas” come from?

tā́nas (Proto-Indo-Aryan) comes from Proto-Indo-Iranian tā́nas, from Proto-Indo-European tónos, from Proto-Indo-European ten- — to stretch, to extend.

Ancestry of “tā́nas”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iraniantā́nas—
2Proto-Indo-Europeantónossomething stretched; chord, fiber, string
3Proto-Indo-Europeanten-to stretch, to extend
Every word from Proto-Indo-European ten- →Every word from Proto-Indo-European tónos →Every word from Proto-Indo-Iranian tā́nas →