Where does “smiyeh₂-” come from?

smiyeh₂- (Proto-Indo-European) comes from Proto-Indo-European sḗm, from Proto-Indo-European sem- — together, one.

Ancestry of “smiyeh₂-”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeansḗmone
2Proto-Indo-Europeansem-together, one
Every word from Proto-Indo-European sem- →Every word from Proto-Indo-European sḗm →