Where does “прошлогодний” come from?

прошлогодний (Russian) comes from Russian год, from Old East Slavic годъ, from Proto-Slavic godъ, from Proto-Balto-Slavic gadas, from Proto-Indo-European gʰedʰ- — to join; to unite; to suit.

прошлогодний (Russian): last year; last year's

Definitions

  1. last year; last year's

Ancestry of “прошлогодний”, step by step

прошлогодний traces back through two separate lines of ancestry.

via Russian год

StepLanguageWordMeaning
1Russianгодyear
2Old East Slavicгодъtime, period; time, period, year, age
3Proto-Slavicgodъsuitable, right time; holiday, feast; time, term
4Proto-Balto-Slavicgadasprobably suitable time or gathering, match
5Proto-Indo-Europeangʰedʰ-to join; to unite; to suit

via Russian про́шлый

StepLanguageWordMeaning
1Russianпро́шлыйlast
Every word from Proto-Indo-European gʰedʰ-Every word from Proto-Balto-Slavic gadasEvery word from Proto-Slavic godъ