quadricentenary

[ kwod-ruh-sen-ten-uh-ree, -sen-tn-er-ee; especially British kwod-ruh-sen-tee-nuh-ree ]
/ ˌkwɒd rə sɛnˈtɛn ə ri, -ˈsɛn tnˌɛr i; especially British ˌkwɒd rə sɛnˈti nə ri /

noun, plural quad·ri·cen·ten·a·ries, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019