acknowledgment

• acknowledgement (most common British spelling, also sometimes used in the US)

acknowledge +‎ -ment

• (General American) IPA^(key): /əkˈnɑl.ɪd͡ʒ.mənt/, /əɡˈnɑl.ɪd͡ʒ.mənt/
• (Received Pronunciation) IPA^(key): /əkˈnɒl.ɪd͡ʒ.mənt/, /əɡˈnɒl.ɪd͡ʒ.mənt/
• Hyphenation: ac‧know‧ledg‧ment

• Audio (US)

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acknowledgment (countable and uncountable, plural acknowledgments)

1. The act of acknowledging

   Synonym: admission.

2. The act of recognizing in a particular character or relationship; recognition of existence, authority, truth, or genuineness.
3. A reward or other expression or token of gratitude.
4. An expression of gratitude for a benefit or an obligation.

   the acknowledgment of a favor

5. A message from the addressee informing the originator that the originator's communication has been received and understood.

   the acknowledgment of a wedding invitation

6. (telecommunications, computing, networking) A response (ACK) sent by a receiver to indicate successful receipt of a transmission (See Wikipedia article on transmission).
7. A recognition as genuine or valid; an avowing or admission in legal form.
   • 1871, John Stuart Mill, Principles of Political Economy, p. 41:

     This is conveniently done by means of a written instrument, called a bill of exchange, which is, in fact, a transferable order by a creditor upon his debtor, and when accepted by the debtor, that is, authenticated by his signature, becomes an acknowledgment of debt.

   acknowledgment of a deed

8. (law) The act of a person admitting a child as their own.
9. (law) A formal statement or document recognizing the fulfillment or execution of a legal requirement or procedure.

• (act of acknowledging): confession, concession, recognition, admission, avowal, recognizance, ACK

• acknowledgment at OneLook Dictionary Search
• acknowledgment in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.