cochair
/ˈkoʊˌtʃɛr/
noun
- A person who shares the position of chairperson with another person.
- The two cochairs worked together to plan the conference.
- As cochair, he helped lead the monthly meetings.
- She was elected cochair of the fundraising committee.
verb
- To serve as a cochair of a committee, event, or organization.
- They will cochair the annual charity gala this year.
- I agreed to cochair the science fair with my colleague.
- Two professors cochair the department's advisory board.