pres ‧ i ‧ den ‧ cy /ˈprezəd ə nsi, ˈprezɪd ə nsi/ BrE AmE noun ( plural presidencies ) [countable]
the position of being the president of a country or organization, or the period of time during which someone is president:
Roosevelt was elected four times to the presidency of the US.
There were few real improvements during his presidency.