sexennial

From New Latin sexennialis (16th century), equivalent to sexennium + -al.

sexennial (not comparable)

1. Pertaining to a period of six years; taking place once every six years. [from 17th c.]
   • 1790, Edmund Burke, Reflections on the Revolution in France:

     [T]his evil was exterior and accidental, and not so much the vice of their constitution itself, as it must be in your new contrivance of sexennial elective judicatories.

sexennial (plural sexennials)

1. A sexennial event.

sextennial

• “sexennial”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• “sexennial”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.
• “sexennial”, in OneLook Dictionary Search.