co-chair
UK: ˈkəʊ ˌtʃeə | US: ˈkoʊ ˌtʃer
n. a person who shares the position of chairperson with another
vt. to jointly preside over a meeting or organization
The word "co-chair" combines the prefix "co-" (from Latin "com-," meaning "together") with "chair," derived from Old French "chaiere" (seat of authority). The prefix "co-" implies shared responsibility, while "chair" retains its original sense of leadership. This hybrid structure reflects modern organizational practices where leadership roles are often distributed.
She was appointed co-chair of the committee alongside her colleague.
The two professors will co-chair the academic conference next year.
As co-chairs, they divided responsibilities equally.
The organization voted to co-chair the event for better coordination.
He enjoys co-chairing the panel because it fosters collaboration.