Where does “議定書” come from?

議定書 (Japanese) comes from Japanese 書, from Middle Chinese 書.

議定書 (Japanese): protocol

Definitions

  1. protocol

Ancestry of “議定書”, step by step

議定書 traces back through two separate lines of ancestry.

via Japanese 書

StepLanguageWordMeaning
1Japanese書document; letter
2Middle Chinese書—

via Japanese 議定

StepLanguageWordMeaning
1Japanese議定agreement
Every word from Middle Chinese 書 →Every word from Japanese 書 →