Bicentennial
Biannual~ this means twice in one yearbiennial~ this means once every two years
the word is novennial....
Something that happens every six years is sexennial.
Sextennial means "Recurring every six years."
Bicentennial
Biannual~ this means twice in one yearbiennial~ this means once every two years
the word is novennial....
Something that happens every six years is sexennial.
The word Biennial means Every two years
Once every century?
Sextennial means "Recurring every six years."
Once a century. Century means 100 years.
A century means one hundred consecutive years, and adjective form is centennial. The adverb form centennially is rarely used.
Sextennial means "Recurring every six years."
The word is "millennium".
biennial