Where does “mặt phẳng” come from?

mặt phẳng (Vietnamese) comes from Vietnamese phẳng, from Proto-Tai ʰwaŋᴮ.

mặt phẳng (Vietnamese): plane

Definitions

  1. plane

Ancestry of “mặt phẳng”, step by step

mặt phẳng traces back through two separate lines of ancestry.

via Vietnamese phẳng

StepLanguageWordMeaning
1Vietnamesephẳnglevel, flat, even
2Proto-Taiʰwaŋᴮ—

via Vietnamese mặt

StepLanguageWordMeaning
1Vietnamesemặtface; aspect; dimension; right
2Middle Vietnamese𩈘face
Every word from Proto-Tai ʰwaŋᴮ →Every word from Vietnamese phẳng →