Where does “二院制” come from?

二院制 (Japanese) comes from Japanese 制, from Middle Chinese 制.

Ancestry of “二院制”, step by step

二院制 traces back through two separate lines of ancestry.

via Japanese 制

StepLanguageWordMeaning
1Japanese制system
2Middle Chinese制—

via Japanese 二院

StepLanguageWordMeaning
1Japanese二院—
Every word from Middle Chinese 制 →Every word from Japanese 制 →