Where does “gravity-darkened” come from?

gravity-darkened (English) comes from English gravity, from French gravité, from Latin gravitās, from Latin -tās, from Proto-Indo-European -teh₂ts, from Proto-Indo-European -teh₂, from Proto-Indo-European -tós — Creates verbal adjectives from verb stems.

gravity-darkened (English): Of a star, specifically its equator: darker due to gravity darkening

Definitions

  1. Of a star, specifically its equator: darker due to gravity darkening

Ancestry of “gravity-darkened”, step by step

gravity-darkened traces back through two separate lines of ancestry.

via English gravity

StepLanguageWordMeaning
1EnglishgravityThe state or condition of having weight; weight;...
2Frenchgravitégravity
3Latingravitāsweight, heaviness
4Latin-tāsty, -dom, -hood, -ness, -ship
5Proto-Indo-European-teh₂tsUsed to form nouns representing state of being
6Proto-Indo-European-teh₂Used to form nouns representing state of being
7Proto-Indo-European-tósCreates verbal adjectives from verb stems

via English darkened

StepLanguageWordMeaning
1Englishdarkenedsimple past tense and past participle of darken;...
Every word from Proto-Indo-European -tósEvery word from Latin -tāsEvery word from Latin gravitās