Where does “pięćsetletni” come from?

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

pięćsetletni (Polish): five-hundred-year-old, five-hundred-year-long

Definitions

  1. five-hundred-year-old, five-hundred-year-long

Ancestry of “pięćsetletni”, step by step

pięćsetletni traces back through two separate lines of ancestry.

via Polish letni

StepLanguageWordMeaning
1Polishletnisummer, summery, estival
2Polishlatosummer
3Proto-Slaviclětosummer; year
4Proto-Indo-Europeanleh₁tóm—

via Polish pięćset

StepLanguageWordMeaning
1Polishpięćsetfive hundred
2Old Polishpięćsetfive hundred
3Proto-Slavic*pętь sъtъ—
Every word from Proto-Indo-European leh₁tóm →Every word from Proto-Slavic lěto →Every word from Polish lato →