Where does “heterogeneousness” come from?

heterogeneousness (English) comes from English heterogeneous, from Medieval Latin heterogeneus, from Ancient Greek ἑτερογενής, from Ancient Greek -γενής, from Ancient Greek -είᾱ, from Ancient Greek -ής, from Proto-Indo-European -ēs, from Proto-Indo-European -ess — Creates action nouns or result nouns from verbs;...

heterogeneousness (English): The quality of being heterogeneous

Definitions

  1. The quality of being heterogeneous

Ancestry of “heterogeneousness”, step by step

heterogeneousness traces back through two separate lines of ancestry.

via English heterogeneous

StepLanguageWordMeaning
1EnglishheterogeneousDiverse in kind or nature; composed of diverse...
2Medieval Latinheterogeneusheterogeneous
3Ancient Greekἑτερογενήςheterogenous; of different kinds
4Ancient Greek-γενήςborn in a certain place or condition; of a kind
5Ancient Greek-είᾱSuperficially appears in abstract nouns derived from σ-stem adjectives, with the true suffix being
6Ancient Greek-ήςadjective suffix
7Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
8Proto-Indo-European-ess
9Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European -osEvery word from Ancient Greek -ήςEvery word from Ancient Greek -είᾱ