acknowledgement

英[ək'nɒlɪdʒm(ə)nt] 美[ək'nɑlɪdʒmənt]

1. the state or quality of being recognized or acknowledged;: "the partners were delighted with the recognition of their work"; "she seems to avoid much in the way of recognition or acknowledgement of feminist work prior to her own"

2. 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"