The term MC is used to refer to a HOST or COMPERE. An MC, or Master of Ceremonies, is a person who acts as the HOST or presenter of an event. They are responsible for introducing speakers, keeping the event running smoothly, and providing entertainment. The term is often used in the context of a live performance, such as a concert or awards show. MCs are also used in corporate events, such as conferences and conventions. They are expected to be knowledgeable about the event and its participants, and to be able to engage the audience with their wit and charm.