Home/quincentennialquincentennial/kwin-sen-ten-ee-uhl/US // ˌkwɪn sɛnˈtɛn i əl //五周年纪念,五周年,五十年纪念,五年纪念Definitionsadj.形容词 adjective1: pertaining to or marking a period of 500 years.Level 5Browse all words →