Where does “Роздільна” come from?

Роздільна (Ukrainian) comes from Ukrainian діли́ти, from Proto-Slavic děliti, from Proto-Balto-Slavic doyl-, from Proto-Indo-European dʰayl- — part, watershed.

Ancestry of “Роздільна”, step by step

StepLanguageWordMeaning
1Ukrainianділи́тиto divide
2Proto-Slavicdělitito divide
3Proto-Balto-Slavicdoyl-—
4Proto-Indo-Europeandʰayl-part, watershed
Every word from Proto-Indo-European dʰayl- →Every word from Proto-Balto-Slavic doyl- →Every word from Proto-Slavic děliti →