inauguration
US /ɪˌnɑː.ɡjəˈreɪ.ʃən/
UK /ɪˌnɑː.ɡjəˈreɪ.ʃən/
1.
the beginning or introduction of a system, policy, or period
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The inauguration of the new high-speed rail line will revolutionize travel.
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The inauguration of the new policy was met with mixed reactions.
2.
a formal ceremony to mark the beginning of a public official's term of office
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The President's inauguration ceremony was held on the steps of the Capitol.
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Thousands gathered to witness the governor's inauguration.