Where does “sektoridiagrammi” come from?

sektoridiagrammi (Finnish) comes from Finnish diagrammi, from Italian diagramma, from Ancient Greek διάγραμμα, from Ancient Greek δῐᾰ-, from Ancient Greek διά, from Proto-Indo-European dwís, from Proto-Indo-European dwóh₁ — two.

Ancestry of “sektoridiagrammi”, step by step

sektoridiagrammi traces back through two separate lines of ancestry.

via Finnish diagrammi

StepLanguageWordMeaning
1Finnishdiagrammidiagram
2Italiandiagrammadiagram; chart; graph
3Ancient GreekδιάγραμμαThat which is marked out in lines, plan, diagram
4Ancient Greekδῐᾰ-apart; through, across; through; in different...
5Ancient Greekδιάthroughout
6Proto-Indo-Europeandwístwice, doubly; in two
7Proto-Indo-Europeandwóh₁two

via Finnish sektori

StepLanguageWordMeaning
1Finnishsektorisector
2LatinsectorOne who cuts or cuts off, cutter; A purchaser or...
3Latin-tor-er
4Proto-Italic-tōrForms agent nouns to verb stems
5Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
6Proto-Indo-European-tor-s
Every word from Proto-Indo-European dwóh₁Every word from Ancient Greek δῐᾰ-Every word from Proto-Indo-European dwís