/ ˌprɒkləˈmeɪʃn; NAmE ˌprɑːk-/ noun
[ C , U ] an official statement about sth important that is made to the public; the act of making an official statement
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WORD ORIGIN
late Middle English : via Old French from Latin proclamatio(n-) , from proclamare shout out, from pro- forth + clamare to shout.