qindexquatercentennial./kwot-er-sen-ten-ee-uhl/US // ˌkwɒt ər sɛnˈtɛn i əl //五年纪念,五年纪念日,五周年纪念,五周年Definitionsadj.adjective · 形容词1.›pertaining to or marking a period of 400 years.Level 5More words in q →