[noun] [C usually singular]The committee met under the chairmanship of Joan Black (= with her being in charge).His chairmanship (= The period when he was in charge) lasted a year.Who do you think will get the chairmanship (= the position of being in charge) of the company?
CHAIRMANSHIP
Meaning of CHAIRMANSHIP in English
Cambridge English vocab. Кембриджский английский словарь. 2012