Also found in: Dictionary, Thesaurus, Medical, Financial, Acronyms, Idioms, Encyclopedia, Wikipedia.


A person who by virtue of attaining a certain age, generally eighteen, is regarded in the eyes of the law as being able to manage his or her own affairs.

The age specified by law, called the legal age of majority, indicates that a person acquires full legal capacity to be bound by various documents, such as contracts and deeds, that he or she makes with others and to commit other legal acts such as voting in elections and entering marriage. The age at which a person becomes an adult varies from state to state and often varies within a state, depending upon the nature of the action taken by the person. Thus, a person wishing to obtain a license to operate a motor vehicle may be considered an adult at age sixteen, but may not reach adulthood until age eighteen for purposes of marriage, or age twenty-one for purposes of purchasing intoxicating liquors.

Anyone who has not reached the age of adulthood is legally considered an infant.


noun adultus, elder, fully developed person, fully grown person, grown-up person, mature person, one who has attained legal majority, person of age, person of voting age, pubes, senior
Associated concepts: adult male, adult person, adult woman, age of majority
See also: ripe


a person who has attained the age of legal majority.

ADULT, in the civil law. An infant who, if a boy, has attained his full age of fourteen years, and if a girl, her full age of twelve. Domat, Liv. Prel. t. 2, s. 2, n. 8. In the common law an adult is considered one of full age. 1 Swanst. R. 553.

References in periodicals archive ?
Young adults say they can praise God in prayer anytime, and many do attend prayer groups elsewhere.
2: Therapeutic Crisis intervention; Trainer Certificate; SafeGuards Training for Children and Adult Services; Calgary; 905-889-5030
General and specific fears in referred and self-referred adult patients with extreme dental anxiety.
However, McInnis-Dittrich (2002) points out that life partners are important to gay and lesbian older adults and they play an equally important and valuable role in their lives.
Without question, these represent important topics for law enforcement officers to understand and master; however, they typically do not focus on the adult learner.
Many teachers perceived a growing lack of respect among students for adult authority while some parents and students were equally passionate about the perceived lack of respect towards students on the part of faculty.
Reconsidering bibliographic instruction for adult reentry students: emphasizing the practical.
That is, there could be an in utero exposure that would lead by itself to pathophysiology later in life or there could be in utero exposure combined with a neonatal exposure (same or different compound(s) or adult exposure that would trigger the pathophysiology.
In Baltimore, Human Rights Watch found that children housed in adult jails faced the same conditions as those described in Los Angeles.
Bacteraemia and mortality among adult medical admissions in Malawi--predominance of non-typhi salmonellae and Streptococcus pneumoniae.