come of age
US /kʌm əv eɪdʒ/
UK /kʌm əv eɪdʒ/
1.
to reach the age when one is legally an adult
:
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She will come of age next year and be able to vote.
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In many countries, you come of age at 18.
2.
to reach a stage of maturity or full development
:
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The young artist's work has truly come of age with this exhibition.
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The internet has truly come of age as a powerful tool for communication.