A presidency is the executive office of a country, state, company, or other large organization. It's also the way to refer to the whole length of time a president is president: "Washington's presidency ended after two terms."

When a candidate is elected to the presidency, that person becomes president, the head of a nation, organization, college, or company. The presidency of the United States has potential to change every four years, when the country holds elections. You can also use presidency to talk about a particular time period, defined by who was president them: "His presidency was a period marked by recession and job loss."

Definitions of presidency
  1. noun
    the office and function of president
    “Andrew Jackson expanded the power of the presidency beyond what was customary before his time”
    synonyms: presidentship
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    Chief Executive, President, President of the United States
    the office of the United States head of state
    type of:
    berth, billet, office, place, position, post, situation, spot
    a job in an organization
  2. noun
    the tenure of a president
    synonyms: administration, presidential term
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    type of:
    incumbency, tenure, term of office
    the term during which some position is held