1.
extension of time or period
Extending a deadline, contract, subscription, or time limit beyond its original end date.
契約を一年延長した。
I extended the contract by one year.
図書館の本の貸出期間を延長できますか。
Can I extend the borrowing period for the library book?
2.
extension of length
Making something physically longer, or the total length of something.
この道路の延長は約10キロだ。
The total length of this road is about 10 kilometers.
3.
overtime (sports)
Extra time played in sports when a game is tied at the end of regulation.
試合は延長に入った。
The game went into overtime.
COMPOSITION: 延 (extend, postpone) + 長 (long). Literally "extending long."
COMMON COLLOCATIONS:
- 契約を延長する (to extend a contract)
- 期限を延長する (to extend a deadline)
- 滞在を延長する (to extend one's stay)
- 会員期間の延長 (membership extension)
- 延長料金 (extension fee)
- 延長コード (extension cord)
- 延長戦 (overtime game)
CONTRAST:
- 延長: general extension (time, length, contracts)
- 延期: postponement (moving an event to a later date)
- 更新: renewal (starting a new term)
USAGE NOTES:
- 延長する is used when extending without changing fundamental terms
- For visas: ビザを延長する (extend a visa)
- For subscriptions: 自動延長 (automatic renewal/extension)