Where does “terästyä” come from?
terästyä (Finnish) comes from Finnish terästää, from Finnish teräs, from Proto-Finnic teräs, from Proto-Finnic terä, from Proto-Finno-Permic terä — edge.
terästyä (Finnish): to become stronger or sharper, to be hardened
Definitions
- to become stronger or sharper, to be hardened