Where does “южнославянский” come from?

южнославянский (Russian) comes from Russian славя́нский, from Proto-Slavic slověnьskъ, from Proto-Slavic slověninъ, from Proto-Slavic slovo, from Proto-Balto-Slavic ślawas, from Proto-Indo-European ḱléwos, from Proto-Indo-European ḱlew-, from Proto-Indo-European ḱel- — to cover; to incline.

южнославянский (Russian): South Slavic relating to the South Slavs

Definitions

  1. South Slavic relating to the South Slavs

Ancestry of “южнославянский”, step by step

южнославянский traces back through two separate lines of ancestry.

via Russian славя́нский

StepLanguageWordMeaning
1Russianславя́нскийSlav, Slavic
2Proto-SlavicslověnьskъSlavic
3Proto-SlavicslověninъSlav
4Proto-Slavicslovoword
5Proto-Balto-Slavicślawas—
6Proto-Indo-Europeanḱléwosfame
7Proto-Indo-Europeanḱlew-to hear
8Proto-Indo-Europeanḱel-to cover; to incline

via Russian ю́жный

StepLanguageWordMeaning
1Russianю́жныйsouth, southern
2Russian-ный-ish, -ic, -al, -ed
3Old Church Slavonic-ьнъish, -ic, -al, -ed
4Proto-Slavic-ьnъ-ish, -ic, -al, -ed; From adjectives
Every word from Proto-Indo-European ḱel- →Every word from Proto-Indo-European ḱlew- →Every word from Proto-Indo-European ḱléwos →