acknowledgementac·knowl·edge·ment /əkˈnɒlɪdʒmənt-ˈnɑː-/ (also acknowledgment) noun [countableC, uncountableU]1a letter sent to someone, saying that you have received something from themWhen we receive an enquiry, a letter of acknowledgement is sent back immediately, enclosing a hotel brochure.
a standard acknowledgement letter