From Longman Dictionary of Contemporary Englishchairmanshipchair‧man‧ship /ˈtʃeəmənʃɪp $ ˈtʃer-/ noun [countable, uncountable]IN CHARGE OFthe position of being a chairman, or the time when someone has this positionunder somebody’s chairmanship
A committee was set up under the chairmanship of Edmund Compton.Examples from the Corpuschairmanship• By effectivechairmanship this was achieved.• Ebner said he is weighing a candidate to rivalChiefExecutive Robert Studer for its chairmanship.• Brownresigned the chairmanship of the committee in March.• Valin had resigned the chairmanship in 1989.• In 1972 a committee under the chairmanship of Lord Franks was appointed to review the position.