co-chair
nounUK /ˌkəʊˈtʃeə/
US /ˌkoʊˈtʃer/
A co-chair is a person who leads a group together with another person.
She was chosen as co-chair of the school fair committee.
RELATED WORDS
OTHER MEANINGS
2. To serve as one of two or more leaders of a group or event.
They will co-chair the meeting next week.
3. A person who shares the duty of running a meeting or organization with others.
The co-chairs opened the conference together.
4. One of two people who lead a department or team equally.
He is co-chair of the science department.