Definition of quadrennial
1 : consisting of or lasting for four years
2 : occurring or being done every four years
quadrenniallyplay \kwä-ˈdre-nē-ə-lē\ adverb
Did You Know?
Most things quadrennial occur every four years (that's the more common use). We can say, for example, that the U.S. presidential election is a quadrennial event. But we can also say that president's term in office is quadrennial, making good use of the "lasting four years" sense. The Latin combining form quadri- adds a factor of four to many English words: quadriceps (the thigh muscle, which has four parts), quadrilateral (a four-sided polygon), quadragenarian (a person in his or her 40s), and quadricentennial (a 400th anniversary), to name a few. The -ennial part of quadrennial has the same root as in biennial and centennial; all trace back to annus, the Latin word for "year."
First Known Use of quadrennial
Learn More about quadrennial
Seen and Heard
What made you want to look up quadrennial? Please tell us where you read or heard it (including the quote, if possible).