Where does “pięćdziesięcioletni” come from?

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

pięćdziesięcioletni (Polish): fifty-year-old, fifty-year-long

Definitions

  1. fifty-year-old, fifty-year-long

Ancestry of “pięćdziesięcioletni”, step by step

pięćdziesięcioletni traces back through two separate lines of ancestry.

via Polish letni

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

via Polish pięćdziesiąt

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