Where does “гравитационна вълна” come from?

гравитационна вълна (Bulgarian) comes from Bulgarian вълна, from Church Slavonic вльна, from Proto-Slavic vь̀lna, from Proto-Balto-Slavic wílˀnāˀ, from Proto-Indo-European h₂wĺ̥h₁neh₂, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

гравитационна вълна (Bulgarian): gravity wave large undulation dominated by gravitational effects

Definitions

  1. gravity wave large undulation dominated by gravitational effects

Ancestry of “гравитационна вълна”, step by step

гравитационна вълна traces back through two separate lines of ancestry.

via Bulgarian вълна

StepLanguageWordMeaning
1Bulgarianвълнаwool; fleece; textile or yarn made of wool
2Church Slavonicвльна
3Proto-Slavicvь̀lnawool
4Proto-Balto-Slavicwílˀnāˀwool
5Proto-Indo-Europeanh₂wĺ̥h₁neh₂wool
6Proto-Indo-European-nósCreates verbal adjectives from roots

via Bulgarian гравитацио́нен

StepLanguageWordMeaning
1Bulgarianгравитацио́ненgravitation; gravitational
Every word from Proto-Indo-European -nósEvery word from Proto-Indo-European h₂wĺ̥h₁neh₂Every word from Proto-Balto-Slavic wílˀnāˀ