/ ˌkɒnvəˈkeɪʃn; NAmE ˌkɑːn-/ noun ( formal )
1.
[ C ] a large formal meeting, especially of Church officials or members of a university
2.
[ U ] the act of calling together a convocation
3.
[ C ] ( NAmE ) a ceremony held in a university or college when students receive their degrees
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WORD ORIGIN
late Middle English : from Latin convocatio(n-) , from the verb convocare , from con- together + vocare call.