Where does “piętnastolecie” come from?

piętnastolecie (Polish) comes from Polish lato, from Proto-Slavic lěto, from Proto-Indo-European leh₁tóm.

piętnastolecie (Polish): fifteen-year-long period

Definitions

  1. fifteen-year-long period

Ancestry of “piętnastolecie”, step by step

piętnastolecie traces back through two separate lines of ancestry.

via Polish lato

StepLanguageWordMeaning
1Polishlatosummer
2Proto-Slaviclětosummer; year
3Proto-Indo-Europeanleh₁tóm—

via Polish piętnaście

StepLanguageWordMeaning
1Polishpiętnaściefifteen
2Old Polishpiętnaściefifteen
3Proto-Slavic*pętь na desęte—
Every word from Proto-Indo-European leh₁tóm →Every word from Proto-Slavic lěto →Every word from Polish lato →