quadrennial adjective & noun.
[kwɒ'drɛnɪǝl] M17.[from QUADRENNIUM + -AL1.]A. adjective.
1. Lasting for four years.
M17.2. Occurring every four years.
rare.
E18.b. noun.
1. A period of four years. Only in
M17.2. An event occurring every four years.
rare.
M19. ■ quadrennially adverb every fourth year
L18. [TahlilGaran] English Dictionary ▲