Where does “chernozem” come from?

chernozem (Portuguese) comes from Russian чернозём, from Russian чёрный, from Proto-Slavic čьrnъ, from Proto-Balto-Slavic kiršnas, from Proto-Indo-European kr̥snós, from Proto-Indo-European kers- — black, dirty; run; to run.

chernozem (Portuguese): chernozem black-coloured soil containing a high percentage of humus

Definitions

  1. chernozem black-coloured soil containing a high percentage of humus

Ancestry of “chernozem”, step by step

StepLanguageWordMeaning
1Russianчернозёмchernozem, black soil
2Russianчёрныйblack; rough, coarse; back
3Proto-Slavicčьrnъblack
4Proto-Balto-Slavickiršnasblack
5Proto-Indo-Europeankr̥snósblack; dark, dusky
6Proto-Indo-Europeankers-black, dirty; run; to run
Every word from Proto-Indo-European kers- →Every word from Proto-Indo-European kr̥snós →Every word from Proto-Balto-Slavic kiršnas →