Where does “Тернопілля” come from?

Тернопілля (Ukrainian) comes from Ukrainian Терно́піль, from Polish Tarnopol, from Polish Tarnowski, from Polish Tarnów, from Proto-Slavic tьrnъ, from Proto-Balto-Slavic tirnas, from Proto-Indo-European tr̥nós, from Proto-Indo-European (s)ter- — strong, firm, stiff, rigid; rigid, stiff; to...

Ancestry of “Тернопілля”, step by step

StepLanguageWordMeaning
1UkrainianТерно́піль—
2PolishTarnopol—
3PolishTarnowskiof Tarnów
4PolishTarnów—
5Proto-Slavictьrnъthorn; blackthorn, sloe-tree
6Proto-Balto-Slavictirnasthorn
7Proto-Indo-Europeantr̥nóssharp, stiff
8Proto-Indo-European(s)ter-strong, firm, stiff, rigid; rigid, stiff; to...
Every word from Proto-Indo-European (s)ter- →Every word from Proto-Indo-European tr̥nós →Every word from Proto-Balto-Slavic tirnas →