Where does “slå sammen” come from?

slå sammen (Norwegian Bokmål) comes from Norwegian Bokmål sammen, from Old Norse saman, from Proto-Germanic samanai, from Proto-Indo-European sem- — together, one.

Ancestry of “slå sammen”, step by step

slå sammen traces back through two separate lines of ancestry.

via Norwegian Bokmål sammen

StepLanguageWordMeaning
1Norwegian Bokmålsammentogether; simultaneously; into each other
2Old Norsesamantogether; strong masculine accusative singular of...
3Proto-Germanicsamanaiat one; together
4Proto-Indo-Europeansem-together, one

via Norwegian Bokmål slå

StepLanguageWordMeaning
1Norwegian Bokmålslåto beat, punch, hit, strike; to tack; slå sammen...
2Old Norsesláto hit, beat, strike; to strike, pluck
3Proto-Germanicslahanąto hit, to strike; to kill
4Proto-Indo-Europeanslak-to hit; strike; to hit, strike, throw; to hit,...
Every word from Proto-Indo-European sem- →Every word from Proto-Germanic samanai →Every word from Old Norse saman →