a 400th anniversary or the year or celebration marking it
Derived forms
quatercentennial (ˌkwætəsɛnˈtɛnɪəl)
adjective, noun
Word origin
C19: from Latin quater four times + centenary
Examples of 'quatercentenary' in a sentence
quatercentenary
And a committee has just been set up to ensure that its quatercentenary in 2011 is celebrated with rejoicing, gusto and a host of national commemorations.
Times, Sunday Times (2009)
Ireland's only intact city walls, which reach 26ft and bristle with 17th-century cannon, celebrate their quatercentenary this year.
Times, Sunday Times (2014)
In 1964 he chaired the Shakespeare Exhibition at Stratford-upon-Avon on the quatercentenary of the playwright's birth.