Where does “δυώδεκα” come from?

δυώδεκα (Ancient Greek) comes from Proto-Indo-European *dwoΗdeḱm̥.

Ancestry of “δυώδεκα”, step by step

StepLanguageWordMeaning
1Proto-Indo-European*dwoΗdeḱm̥
Every word from Proto-Indo-European *dwoΗdeḱm̥
δυώδεκα — Etymology, Origin & Word History | Etymology Explorer