Where does “ダイヤグラム” come from?

ダイヤグラム (Japanese) comes from English diagram, from French diagramme, 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.

ダイヤグラム (Japanese): diagram: a schedule for a form of transportation such as a train or airplane, especially in the sense of an internal document listing the duties of a specific vehicle or crew

Definitions

  1. diagram: a schedule for a form of transportation such as a train or airplane, especially in the sense of an internal document listing the duties of a specific vehicle or crew

Ancestry of “ダイヤグラム”, step by step

StepLanguageWordMeaning
1EnglishdiagramA plan, drawing, sketch or outline to show how...
2Frenchdiagrammediagram
3Italiandiagrammadiagram; chart; graph
4Ancient GreekδιάγραμμαThat which is marked out in lines, plan, diagram
5Ancient Greekδῐᾰ-apart; through, across; through; in different...
6Ancient Greekδιάthroughout
7Proto-Indo-Europeandwístwice, doubly; in two
8Proto-Indo-Europeandwóh₁two
Every word from Proto-Indo-European dwóh₁Every word from Ancient Greek δῐᾰ-Every word from Proto-Indo-European dwís