Meaning of SEXENNIAL in English

(ˈ)sek|senēəl adjective

Etymology: Latin sexenni um period of six years (from sex six + -ennium, from annus year) + English -al — more at six , annual

1. : continuing or lasting six years

a sexennial period

2. : occurring, appearing, or being made, done, or acted upon every six years

• sex·en·ni·al·ly -əlē, -li adverb

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.