Where does “однородность” come from?
однородность (Russian) comes from Russian одноро́дный, from Russian одно-, from Russian оди́н, from Old East Slavic оди́нъ, from Proto-Slavic edìnъ, from Proto-Balto-Slavic edīˀnas, from Proto-Balto-Slavic aiˀnas, from Proto-Indo-European óynos — one; single.
однородность (Russian): homogeneity
Ancestry of “однородность”, step by step