also: まんきじつ
noun
due date; maturity date; expiration date
Used in financial and contractual contexts for the date when a bond, loan, insurance policy, or similar instrument matures or expires.
この債券の満期日は来年の3月31日です。
The maturity date of this bond is March 31st next year.
保険証券の満期日を確認してください。
Please check the expiration date of the insurance policy.
Compound of 満期 (maturity, expiration) and 日 (day, date).