Where does “Lappeenranta” come from?

Lappeenranta (English) comes from Finnish Lappeenranta, from Finnish ranta, from Proto-Finnic ranta, from Proto-Germanic strandō, from Proto-Indo-European (s)trAnt-, from Proto-Indo-European sterh₃-, from Proto-Indo-European ster- — sterile, infertile.

Ancestry of “Lappeenranta”, step by step

StepLanguageWordMeaning
1FinnishLappeenranta
2Finnishrantashore; beach; bank
3Proto-Finnicrantashore, coast
4Proto-Germanicstrandōedge; rim; shore, strand
5Proto-Indo-European(s)trAnt-strand, border, field
6Proto-Indo-Europeansterh₃-to spread, extend, stretch out
7Proto-Indo-Europeanster-sterile, infertile
Every word from Proto-Indo-European ster-Every word from Proto-Indo-European sterh₃-Every word from Proto-Indo-European (s)trAnt-