noun
society president; chairperson of an association
Formal title for the head of a business or professional association, such as a chamber of commerce or trade group.
彼は商工会議所の会頭に選ばれた。
He was elected president of the chamber of commerce.
会長 is a more general term for chairman or president of any organization, while 会頭 is specifically used for certain business associations like chambers of commerce.
Compound of 会 (association) and 頭 (head, leader). The reading かいとう is the standard on'yomi combination.