Where does “延長戦” come from?

延長戦 (Japanese) comes from Japanese 延長, from Japanese 延, from Middle Chinese えん, from Chinese 銀圓 — Alternative form of 銀元／银元; round silver object,...

延長戦 (Japanese): An extra game of soccer, baseball, martial arts,...

Definitions

延長戦 traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Japanese	延長	An extension of length or period; lengthening; An...
2	Japanese	延	to extend
3	Middle Chinese	えん	—
4	Chinese	銀圓	Alternative form of 銀元／银元; round silver object,...

Step	Language	Word	Meaning
1	Japanese	戦	a battle, conflict, fight, war; a game, match; a...
2	Middle Chinese	戰	—