Where does “sosiaalidemokraatti” come from?

sosiaalidemokraatti (Finnish) comes from Finnish demokraatti, from French démocrate, from French démocratie, from Middle French democratie, from Medieval Latin democratia, from Ancient Greek δημοκρατία, from Ancient Greek δημο-, from Ancient Greek δῆμος — to turn, bend, twist, wind; to tie, bind...

sosiaalidemokraatti (Finnish): A social democrat