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n.
a statement acknowledging something or someone; "she must have seen him but she gave no sign of acknowledgment"; "the preface contained an acknowledgment of those who had helped her"
n.
a statement (either spoken or written) that is made in reply to a question or request or criticism or accusation; "I waited several days for his answer"; "he wrote replies to several of his critics"
n.
a message that is stated or declared; a communication (oral or written) setting forth particulars or facts etc; "according to his statement he was in London on that day"