Where does “Phetchabun” come from?

Phetchabun (English) comes from Thai เพชรบูรณ์, from Thai เพชร, from Old Khmer bejra, from Sanskrit वज्र, from Sanskrit यान, from Proto-Indo-Aryan yáHnam, from Proto-Indo-Iranian yáHnam, from Proto-Indo-European yéh₂-nom — to go; to go in, enter; to ride, to travel.

Ancestry of “Phetchabun”, step by step

StepLanguageWordMeaning
1Thaiเพชรบูรณ์—
2Thaiเพชรdiamond; lightning bolt; thunderbolt; "vajra", a...
3Old Khmerbejra—
4Sanskritवज्र"the hard or mighty one", a thunderbolt; a...
5Sanskritयानcarriage, vehicle, mode of transport; moving,...
6Proto-Indo-AryanyáHnam—
7Proto-Indo-IranianyáHnam—
8Proto-Indo-Europeanyéh₂-nom—
9Proto-Indo-Europeanyeh₂-to go; to go in, enter; to ride, to travel
Every word from Proto-Indo-European yeh₂- →Every word from Proto-Indo-European yéh₂-nom →Every word from Proto-Indo-Iranian yáHnam →