Where does “желтобрюхий” come from?

желтобрюхий (Russian) comes from Russian жёлтый, from Old East Slavic жьлтъ, from Proto-Slavic žьltъ, from Proto-Balto-Slavic gilˀtas, from Proto-Indo-European ǵʰelh₃- — to flourish; green, yellow.

желтобрюхий (Russian): yellow-bellied

Definitions

  1. yellow-bellied

Ancestry of “желтобрюхий”, step by step

желтобрюхий traces back through two separate lines of ancestry.

via Russian жёлтый

StepLanguageWordMeaning
1Russianжёлтыйyellow
2Old East Slavicжьлтъ—
3Proto-Slavicžьltъyellow
4Proto-Balto-Slavicgilˀtasyellow
5Proto-Indo-Europeanǵʰelh₃-to flourish; green, yellow

via Russian брюхо

StepLanguageWordMeaning
1Russianбрюхоbelly; paunch
2Old East Slavicбрюхо—
3Proto-Slavicbřȗxobelly
Every word from Proto-Indo-European ǵʰelh₃- →Every word from Proto-Balto-Slavic gilˀtas →Every word from Proto-Slavic žьltъ →