Where does “蝶番関節” come from?

蝶番関節 (Japanese) comes from Japanese 蝶番, from Japanese 蝶, from Middle Chinese 蝶.

蝶番関節 (Japanese): hinge joint

Definitions

  1. hinge joint

Ancestry of “蝶番関節”, step by step

蝶番関節 traces back through two separate lines of ancestry.

via Japanese 蝶番

StepLanguageWordMeaning
1Japanese蝶番hinge
2Japanese蝶a butterfly
3Middle Chinese蝶—

via Japanese 関節

StepLanguageWordMeaning
1Japanese関節joint
Every word from Middle Chinese 蝶 →Every word from Japanese 蝶 →Every word from Japanese 蝶番 →
蝶番関節 — Etymology, Origin & Word History | Etymology Explorer