Where does “รถไฟความเร็วสูง” come from?

รถไฟความเร็วสูง (Thai) comes from Thai รถไฟ, from Thai รถ, from Pali ratha, from Sanskrit रथ, from Proto-Indo-Iranian Hrátʰas, from Proto-Indo-European Hrót-h₂-os, from Proto-Indo-European Hret- — to roll; wheel; to run, roll.

รถไฟความเร็วสูง (Thai): high-speed rail

Definitions

  1. high-speed rail

Ancestry of “รถไฟความเร็วสูง”, step by step

รถไฟความเร็วสูง traces back through 3 separate lines of ancestry.

via Thai รถไฟ

StepLanguageWordMeaning
1Thaiรถไฟtrain: connected group of rolling stock
2Thaiรถchariot, carriage, cart, wagon, or the like;...
3Palirathaa chariot, a car; delight, pleasure
4Sanskritरथchariot, car, especially a two-wheeled...
5Proto-Indo-IranianHrátʰaschariot
6Proto-Indo-EuropeanHrót-h₂-os
7Proto-Indo-EuropeanHret-to roll; wheel; to run, roll

via Thai ความเร็ว

StepLanguageWordMeaning
1Thaiความเร็วspeed; velocity
2Thaiความaffair; matter; content; essence; subject;...
3Proto-Taiɣwaːmᴬmatter

via Thai สูง

StepLanguageWordMeaning
1Thaiสูงtall; high
2Proto-Southwestern Taisuːŋᴬ¹high
Every word from Proto-Indo-European Hret-Every word from Proto-Indo-European Hrót-h₂-osEvery word from Proto-Indo-Iranian Hrátʰas