Definitions (2)
Related Terms
1. Law: Person who has reached the legal age of majority. In the US, it is 17 years for criminal cases and 18 years for other purposes. In the UK it is 18 years for all purposes. See also legal age.
2. Travel industry: Person who has reached his or her 12th birthday on or before the day the travel commences.

Use 'adult' in a Sentence

In the United States of America, one must be able to prove that one is a legal adult in order to work full-time for any company or organization.
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Depending on what your business is it may only be for an adult and you must be sure no one under 18 gets inside.
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The adult in the case was of legal age to operate the machinery so we were able to treat him as an adult legally.
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