Where does “седовласый” come from?

седовласый (Russian) comes from Russian влас, from Old Church Slavonic власъ, from Proto-Slavic vȏlsъ — hair pigmented filament.

Ancestry of “седовласый”, step by step

седовласый traces back through two separate lines of ancestry.

via Russian влас

StepLanguageWordMeaning
1Russianвласhair
2Old Church Slavonicвласъhair
3Proto-Slavicvȏlsъhair pigmented filament

via Russian седо́й

StepLanguageWordMeaning
1Russianседо́йgrey, grey-haired, grey-headed (having grey hair)
Every word from Proto-Slavic vȏlsъ →Every word from Old Church Slavonic власъ →Every word from Russian влас →
седовласый — Etymology, Origin & Word History | Etymology Explorer