1. 总统职位；总裁职位；主席职位
The presidency of a country or organization is the position of being the president or the period of time during which someone is president.

1. the office and function of president

e.g. Andrew Jackson expanded the power of the presidency beyond what was customary before his time

Synonym: presidentship

2. the tenure of a president

e.g. things were quiet during the Eisenhower administration

Synonym: presidential termadministration