Where does “heteroseksuaalisuus” come from?
heteroseksuaalisuus (Finnish) comes from Finnish heteroseksuaalinen, from Finnish seksuaalinen, from Latin sexuālis, from Latin sexus, from Proto-Italic seksus, from Proto-Indo-European séksus, from Proto-Indo-European sek- — to cut, cut off, sever.
heteroseksuaalisuus (Finnish): heterosexuality
Ancestry of “heteroseksuaalisuus”, step by step