Search Result for "quatercentenary": 
Wordnet 3.0

NOUN (1)

1. the 400th anniversary (or the celebration of it);
[syn: quatercentennial, quatercentenary]


WordNet (r) 3.0 (2006):

quatercentenary n 1: the 400th anniversary (or the celebration of it) [syn: quatercentennial, quatercentenary]