Skip to content
Kotomora

時じ効こう

じ
こ
う
Common wordJLPTN1Freq.Top 20,000

Meanings

1

noun

statute of limitations; prescription; lapse of rights after a period of time

Legal term for the expiration of a right or claim after a statutory period. Covers both extinctive and acquisitive prescription.

2

noun

becoming invalid or void after a set time

General, non-legal use for something losing validity or effect after a certain period, such as a coupon, warranty, or informal promise.

3

noun

ageing; aging

Chemistry term, mainly in compounds like 時効硬化 (age hardening). Rarely used alone.

See also: 時効硬化

Usage patterns