Where does “Зеленортска острва” come from?

Зеленортска острва (Serbo-Croatian) comes from Serbo-Croatian зелен, from Proto-Slavic zelenъ, from Proto-Slavic zelti, from Proto-Indo-European ǵʰelh₃- — to flourish; green, yellow.

Ancestry of “Зеленортска острва”, step by step

Зеленортска острва traces back through 3 separate lines of ancestry.

via Serbo-Croatian зелен

StepLanguageWordMeaning
1Serbo-Croatianзеленgreen; unripe; inexperienced
2Proto-Slaviczelenъgreen
3Proto-Slaviczeltiperhaps to hurt, to sting, to inflict trauma
4Proto-Indo-Europeanǵʰelh₃-to flourish; green, yellow

via Serbo-Croatian острво

StepLanguageWordMeaning
1Serbo-Croatianострвоisland
2Proto-Slavicostrovъstreamlined; river island; island
3Proto-Indo-Europeanstrow-

via Serbo-Croatian р̏т

StepLanguageWordMeaning
1Serbo-Croatianр̏тcape, promontory, headland
2Proto-Slavicrъtъbeak, tooth; cliff, hill
Every word from Proto-Indo-European ǵʰelh₃-Every word from Proto-Slavic zeltiEvery word from Proto-Slavic zelenъ