IPA: //kɔːrɪˈfeɪəs//
KK: /kɔːrɪˈfeɪəs/
A person who leads or directs a group, especially in a performance or a specific field of thought.
The coryphaeus guided the chorus through their complex performance with great skill.
Coryphaeus is derived from the Greek "koryphaios" (meaning leader or chief), which is related to "koryphe" (meaning summit or peak). The term originally referred to the leader of a chorus in ancient Greek drama, symbolizing the chief or head of a group.
Think of a 'leader' ('koryphaios') at the 'summit' ('koryphe') of a group, guiding others — that's why coryphaeus means a chief or leader.