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 在

StepLanguageWordMeaning
1Japanese在as used in compounds at, in, located
2Middle Chinese在—

via Japanese 共

StepLanguageWordMeaning
1Japanese共both, all; co-; altogether
Every word from Middle Chinese 在 →Every word from Japanese 在 →