acknowledgment

noun

1. (countable, uncountable)The act of acknowledging

   “.”

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

   “the acknowledgment of a favor”

5. (countable, uncountable)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. (countable, uncountable)A response (ACK) sent by a receiver to indicate successful receipt of a transmission (See Wikipedia article on transmission).
7. (countable, uncountable)A recognition as genuine or valid; an avowing or admission in legal form.

   “acknowledgment of a deed”

   “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.”

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