Where does “定期乗車券” come from?

定期乗車券 (Japanese) comes from Japanese 乗車券, from Japanese 券, from Middle Chinese けん, from Middle Chinese 元.

定期乗車券 (Japanese): a rider's season ticket for trains, buses, etc

Definitions

  1. a rider's season ticket for trains, buses, etc

Ancestry of “定期乗車券”, step by step

定期乗車券 traces back through two separate lines of ancestry.

via Japanese 乗車券

StepLanguageWordMeaning
1Japanese乗車券ticket for riding a means of transportation
2Japanese券ticket, certificate; bond, coupon
3Middle Chineseけん—
4Middle Chinese元—

via Japanese 定期

StepLanguageWordMeaning
1Japanese定期fixed period; Short for 定期乗車券
Every word from Middle Chinese 元 →Every word from Middle Chinese けん →Every word from Japanese 券 →
定期乗車券 — Etymology, Origin & Word History | Etymology Explorer