Where does “昼間” come from?

昼間 (Japanese) comes from Japanese 間, from Middle Chinese 間.

昼間 (Japanese): daytime

Definitions

  1. daytime

Ancestry of “昼間”, step by step

昼間 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japaneseinterval; "suffixes some expressions of time to...
2Middle Chinese

via Japanese

StepLanguageWordMeaning
1Japanesethe daytime
Every word from Middle Chinese Every word from Japanese
昼間 — Etymology, Origin & Word History | Etymology Explorer