Where does “Nakhon Pathom” come from?

Nakhon Pathom (English) comes from Thai นครปฐม, from Thai ปฐม, from Pali paṭhama, from Sanskrit प्रथम, from Proto-Indo-Aryan pratʰamás, from Proto-Indo-Iranian pratamás, from Proto-Indo-European pro-tm̥mós, from Proto-Indo-European pro- — passed , crossed.

Ancestry of “Nakhon Pathom”, step by step

StepLanguageWordMeaning
1ThaiนครปฐมNakhon Pathom, a province of Thailand
2Thaiปฐมfirst; primary
3Palipaṭhamafirst; primary, first; foremost
4Sanskritप्रथमforemost, first; earliest, primary, original,...
5Proto-Indo-Aryanpratʰamás
6Proto-Indo-Iranianpratamásfirst
7Proto-Indo-Europeanpro-tm̥mós
8Proto-Indo-Europeanpro-toward, forward
9Proto-Indo-Europeanpor-to give birth; forward, through; going, passage
10Proto-Indo-Europeanper-before, in front; first; to go through
11Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European por-