semicentennial /'semisen'tenjәl/ 📖 中文释义 a. 五十年一度的, 持续半个世纪的n. 五十周年, 五十周年纪念 📘 English Definition(英文释义) n. the 50th anniversary (or the celebration of it)a. of or relating to or marking the 50th anniversary ← semicentenary S 字母词表 semicentury →