Where does “chân không” come from?

chân không (Vietnamese) comes from Vietnamese không, from Chinese 空, from Proto-Sino-Tibetan (g/k)uŋ — hole; orifice; hole; orifice; inner part.

chân không (Vietnamese): vacuum

Definitions

  1. vacuum

Ancestry of “chân không”, step by step

chân không traces back through two separate lines of ancestry.

via Vietnamese không

StepLanguageWordMeaning
1Vietnamesekhôngnot; idly, without doing anything; not have; to...
2Chinese空empty, hollow
3Proto-Sino-Tibetan(g/k)uŋhole; orifice; hole; orifice; inner part

via Vietnamese chân

StepLanguageWordMeaning
1Vietnamesechâna foot; a leg; the lowest circumscribing area
Every word from Proto-Sino-Tibetan (g/k)uŋ →Every word from Chinese 空 →Every word from Vietnamese không →