acknowledgement
n. C / U B2 Upper Intermediate US //ækˈnɑɫɪdʒmənt// UK //ɐknˈɒlɪdʒmənt// ac·knowl·edge·ment
n. a statement that you accept something is true or that you recognize someone's effort. You use it to show you have received a message or to give credit.
n. the act of accepting or admitting the truth or existence of something; a formal expression of thanks or recognition. Typically uncountable when referring to the act of receiving; countable when referring to a specific statement of thanks.
She gave a quick acknowledgement of his help.
The author included an acknowledgement section to thank the researchers who supported the project.
His silence served as a tacit acknowledgement of the team's failure to meet the strict deadline.