of, relating to, or marking the completion of a period of four hundred years.
What is a four hundredth anniversary called?
[ kwot-er-sen-ten-uh-ree, -sen-tn-er-ee; especially British kwot-er-sen-tee-nuh-ree ] SHOW IPA. / ˌkwɒt ər sɛnˈtɛn ə ri, -ˈsɛn tnˌɛr i; especially British ˌkwɒt ər sɛnˈti nə ri / PHONETIC RESPELLING. ? Post-College Level. noun, plural quat·er·cen·ten·ar·ies.
What is 500 years called?
1. quincentenary - the 500th anniversary (or the celebration of it) quincentennial.