What is "recess appointment"

n. (context US legal English) The appointment by the President of the United States of a person to an office that normally requires approval of the United States Senate, but who is appointed without such approval because the Senate is in recess.

A recess appointment is the appointment, by the President of the United States, of a senior federal official while the U.S. Senate is in recess. The United States Constitution requires that the most senior federal officers must be confirmed by the Senate before assuming office, but while the Senate is in recess the President may act alone by making a recess appointment to fill "Vacancies that may happen during the Recess of the Senate." To remain in effect, a recess appointment must be approved by the Senate by the end of the next session of Congress, or the position becomes vacant again; in current practice this means that a recess appointment must be approved by roughly the end of the next calendar year. Recess appointments are authorized by Article II, Section 2 of the U.S. Constitution, which states: