acknowledgement

noun

• 1acceptance of the truth or existence of something:there was no acknowledgement of the family’s trauma

• 2recognition of the importance or quality of something.
• the expression of gratitude or appreciation for something:he received an award in acknowledgement of his work
• the action of showing that one has noticed someone or something:he touched his hat in acknowledgement
• [count noun] a letter confirming receipt of something: I received an acknowledgement of my application

• 3 (acknowledgements) a statement printed at the beginning of a book expressing the author’s or publisher’s gratitude to others: the reproduction on page 50 wasn’t mentioned in the acknowledgements