noun
Loanword from English; used in events, shows, and formal occasions to refer to the host or person who introduces speakers/performers.
彼は結婚式でマスターオブセレモニーを務めた。
He served as the master of ceremonies at the wedding.
イベントのマスターオブセレモニーは、会場を盛り上げた。
The master of ceremonies livened up the venue.