Where does “共在” come from?

共在 (Japanese) comes from Japanese 在, from Middle Chinese 在.

共在 (Japanese): coexistence

Definitions

  1. coexistence

Ancestry of “共在”, step by step

共在 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japaneseas used in compounds at, in, located
2Middle Chinese

via Japanese

StepLanguageWordMeaning
1Japaneseboth, all; co-; altogether
Every word from Middle Chinese Every word from Japanese
共在 — Etymology, Origin & Word History | Etymology Explorer