Sexennial

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Sexennial \Sex*en"ni*al\, a. [L. sexennium a period of six
     years, sexennis of six years; sex six + annus a year. See
     {Six}, and {Annual}.]
     Lasting six years, or happening once in six years. -- n. A
     sexennial event.
     [1913 Webster]