Where does “kaksoissisar” come from?
kaksoissisar (Finnish) comes from Finnish sisar, from Proto-Finnic sesar, from Proto-Balto-Slavic swésō, from Proto-Indo-European swésōr, from Proto-Indo-European su-h₁ésh₂-ōr, from Proto-Indo-European h₁ésh₂r̥ — blood.
kaksoissisar (Finnish): twin sister the other sister of a pair of twins
Definitions
- twin sister the other sister of a pair of twins