Where does “đầu vào” come from?

đầu vào (Vietnamese) comes from Vietnamese vào, from Middle Vietnamese 𠓨 — to enter; in, into, upon.

đầu vào (Vietnamese): an input; inflow; influx

Definitions

  1. an input; inflow; influx

Ancestry of “đầu vào”, step by step

đầu vào traces back through two separate lines of ancestry.

via Vietnamese vào

StepLanguageWordMeaning
1Vietnamesevàoto enter; to go southwards in Vietnam; to become...
2Middle Vietnamese𠓨to enter; in, into, upon

via Vietnamese đầu

StepLanguageWordMeaning
1Vietnameseđầuhead; tip; end; beginning; commencement; start
2Middle Chinese頭—
Every word from Middle Vietnamese 𠓨 →Every word from Vietnamese vào →
đầu vào — Etymology, Origin & Word History | Etymology Explorer