A loanword from English, used in Japanese to refer to the chairman of a meeting, committee, or organization. Often interchangeable with 議長 (gichō) but carries a more Western or corporate nuance.
彼は会議のチェアマンに選ばれた。
He was elected chairman of the meeting.
A former player took office as chairman of the J.League.
He served as chairman for ten years.