Where does “jarovisoida” come from?

jarovisoida (Finnish) comes from Russian яровой, from Proto-Slavic jarovъ, from Proto-Slavic *jaro, from Proto-Indo-European yóh₁r̥ — year.

Ancestry of “jarovisoida”, step by step

StepLanguageWordMeaning
1Russianяровойspring
2Proto-Slavicjarovъspring
3Proto-Slavic*jaro—
4Proto-Indo-Europeanyóh₁r̥year
Every word from Proto-Indo-European yóh₁r̥ →Every word from Proto-Slavic *jaro →Every word from Proto-Slavic jarovъ →