chairmanship
noun [ C, usually singular or U ]
uk/ˈtʃeəmənʃɪp/ us/ˈtʃer-/the position or work of being a chairman, or the period of time during which someone is a chairman:
Lobbyists are pushing for the Senator to give up his chairmanship of the Banking Committee.
I would like to thank Sam Davis for his excellent chairmanship of the meeting.
one-year/two-year, etc. chairmanship His departure brings to an end a tumultuous three-year chairmanship.