Meaning of “announce” - Learner’s Dictionary

announce

verb [ T ] us uk /əˈnaʊns/

B1 to tell people about something officially or with force or confidence:

The company has announced plans to open six new stores.
[ + (that) ] Halfway through dinner, he announced that he was going out.

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(Definition of “announce” from the Cambridge Learner’s Dictionary © Cambridge University Press)