/ ˈselɪbrənt; NAmE / noun
1.
a priest who leads a church service, especially the Communion service; a person who attends a service
2.
( NAmE ) a person who is celebrating sth, for example at a party
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WORD ORIGIN
mid 19th cent.: from French célébrant or Latin celebrant- celebrating, from the verb celebrare , from celeber , celebr- frequented or honoured.