sexcentenary
1 of 2adjective
sex·cen·te·nary
¦sekˌsen‧¦tenərē,
(ˈ)sek¦sentᵊnˌerē
: relating to the number 600 or a 600th anniversary
sexcentenary
2 of 2noun
"
: a 600th anniversary or its celebration
Word History
Etymology
Adjective
Latin sescenteni, sexcenteni six hundred each (from sex six + centeni one hundred each, from centum hundred) + English -ary