The term 'TOPIC OF DISCUSSION' is a phrase used to describe the main subject or idea that is being discussed in a conversation or meeting. It is often used to help focus the discussion and ensure that all participants are on the same page. The crossword solution for this term is 'THEME, ' which is another word for the main topic or idea of a conversation or meeting. A THEME can also be used to refer to the central idea of a book, movie, or other work of art.