Sexennial is a 9 letter English word.
You can make 274 anagrams from letters in sexennial (aeeilnnsx).
1640-50; Latin sexenni(s) six years old (sex six + -enn-, combining form of annus year + -is adj. suffix) + -al1
On January 12 he advised Aquaviva to propose the discussion of a change of assistants and a sexennial congregation.
sexennial, seks-en′yal, adj. lasting six years: happening once in six years—also Sextenn′ial.
In the Brahmanas we only find traces of a quinquennial or sexennial cycle.
Boston, Lincolnshire, had its sexennial epidemic in 1802 with thirty-three deaths.