quinquennial /kwiŋ'kweniәl, -njәl/ 📖 中文释义 a. 持续五年的, 每五年一次的 📘 English Definition(英文释义) a. Occurring once in five years, or at the end of everyfive years; also, lasting five years. A quinquennial event. ← quinquenniad Q 字母词表 quinquennially →