age of majority; age of adulthood
Legal term for the age at which a person is considered an adult under the law. Often used in contexts discussing legal rights and responsibilities. The cross-reference 成人年齢 is a more common synonym.
See also: 成人年齢
In Japan, the age of majority was lowered to 18 from April 2022.
Upon reaching the age of majority, one can enter into contracts without parental consent.