Where does “diagonalness” come from?

diagonalness (English) comes from English diagonal, from Middle French diagonal, from Latin diagōnālis, from Ancient Greek διαγώνιος, from Ancient Greek δῐᾰ-, from Ancient Greek διά, from Proto-Indo-European dwís, from Proto-Indo-European dwóh₁ — two.

diagonalness (English): The condition of being diagonal

Definitions

  1. The condition of being diagonal

Ancestry of “diagonalness”, step by step

diagonalness traces back through two separate lines of ancestry.

via English diagonal

StepLanguageWordMeaning
1EnglishdiagonalJoining two nonadjacent vertices; Having slanted...
2Middle Frenchdiagonal
3Latindiagōnālisdiagonal
4Ancient Greekδιαγώνιοςfrom angle to angle
5Ancient Greekδῐᾰ-apart; through, across; through; in different...
6Ancient Greekδιάthroughout
7Proto-Indo-Europeandwístwice, doubly; in two
8Proto-Indo-Europeandwóh₁two

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 dwóh₁Every word from Ancient Greek δῐᾰ-Every word from Proto-Indo-European dwís