confirmation
US /ˌkɑːn.fɚˈmeɪ.ʃən/
UK /ˌkɑːn.fɚˈmeɪ.ʃən/
1.
the action of confirming something or the state of being confirmed
:
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We are awaiting confirmation of the booking.
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The email serves as confirmation of your order.
2.
a ceremony in which a person is admitted into full membership of the Christian Church
:
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She received her confirmation at the age of twelve.
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The church holds confirmation classes every spring.