Where does “myrkkystruuma” come from?

myrkkystruuma (Finnish) comes from Finnish myrkky, from Proto-Finnic mürkkü, from Proto-Finnic merkkü.

Ancestry of “myrkkystruuma”, step by step

myrkkystruuma traces back through two separate lines of ancestry.

via Finnish myrkky

StepLanguageWordMeaning
1Finnishmyrkkypoison; venom
2Proto-Finnicmürkküpoison
3Proto-Finnicmerkkü

via Finnish struuma

StepLanguageWordMeaning
1Finnishstruumagoitre/goiter
Every word from Proto-Finnic merkküEvery word from Proto-Finnic mürkküEvery word from Finnish myrkky