quatercentenary [kwot-er-sen-ten-uh-ree, -sen-tn-er-ee; especially British kwot-er-sen-tee-nuh-ree] Word Origin noun, plural quat·er·cen·ten·ar·ies.
- a 400th aniversary or its celebration.
- pertaining to or marking a period of 400 years; quatercentennial.
Origin of quatercentenary 1880–85; Latin quater four times + centenary British Dictionary definitions for quatercentenary quatercentenary noun plural -naries
- a 400th anniversary or the year or celebration marking it
Derived Formsquatercentennial (ˌkwætəsɛnˈtɛnɪəl), adjective, nounWord Origin for quatercentenary C19: from Latin quater four times + centenary