Where does “bước sóng” come from?

bước sóng (Vietnamese) comes from Vietnamese sống, from Proto-Vietic k-roːŋʔ, from Proto-Mon-Khmer ruŋʔ.

bước sóng (Vietnamese): a wavelength

Definitions

  1. a wavelength

Ancestry of “bước sóng”, step by step

bước sóng traces back through two separate lines of ancestry.

via Vietnamese sống

StepLanguageWordMeaning
1Vietnamesesốnga spine; to live; living
2Proto-Vietick-roːŋʔback of the blade; alive; raw
3Proto-Mon-Khmerruŋʔ—

via Vietnamese bước

StepLanguageWordMeaning
1Vietnamesebướcstep, pace; situation, juncture; to step
Every word from Proto-Mon-Khmer ruŋʔ →Every word from Proto-Vietic k-roːŋʔ →Every word from Vietnamese sống →