Where does “perpendicularness” come from?

perpendicularness (English) comes from English perpendicular, from Middle French perpendiculaire, from Old French perpendiculer, from Latin perpendiculum, from Latin -culum, from Proto-Italic -klom, from Proto-Indo-European -tlom, from Proto-Indo-European -trom — Derives agent nouns from verbs, denoting someone...

perpendicularness (English): Quality of being perpendicular

Definitions

  1. Quality of being perpendicular

Ancestry of “perpendicularness”, step by step

perpendicularness traces back through two separate lines of ancestry.

via English perpendicular

StepLanguageWordMeaning
1Englishperpendicularat or forming a right angle; Exactly upright;...
2Middle Frenchperpendiculaire
3Old Frenchperpendiculer
4Latinperpendiculumplumbline, plummet
5Latin-culumnominative neuter singular of -culus; accusative...
6Proto-Italic-klom
7Proto-Indo-European-tlomAlternative form of *-trom
8Proto-Indo-European-tromForms nouns denoting a tool or instrument
9Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...

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 -tḗr
perpendicularness — Etymology, Origin & Word History | Etymology Explorer