Where does “Schwarzschild” come from?

Schwarzschild (German) comes from German Schwärz, from Middle High German swarz, from Old High German swarz, from Proto-West Germanic swart, from Proto-Germanic swartaz, from Proto-Indo-European swordo- — dirty, dark, black.

Ancestry of “Schwarzschild”, step by step

Schwarzschild traces back through two separate lines of ancestry.

via German Schwärz

StepLanguageWordMeaning
1GermanSchwärz—
2Middle High Germanswarz—
3Old High Germanswarzblack
4Proto-West Germanicswartblack
5Proto-Germanicswartazblack
6Proto-Indo-Europeanswordo-dirty, dark, black

via German schild

StepLanguageWordMeaning
1Germanschildsign, plate flat surface bearing information
2Middle High Germanschilt—
3Old High Germanscilt—
4Proto-West Germanicskeldushield
5Proto-Germanicskelduzshield
6Proto-Indo-European(s)keit-—
Every word from Proto-Indo-European swordo- →Every word from Proto-Germanic swartaz →Every word from Proto-West Germanic swart →