sähkökirja (Finnish) comes from Finnish sähkö, from Finnish sähähtää, from Finnish ahtaa, from Proto-Finnic aktadak, from Proto-Uralic ëkta- — to hang up.
sähkökirja (Finnish): e-book
Definitions
e-book
Ancestry of “sähkökirja”, step by step
sähkökirja traces back through two separate lines of ancestry.