the lunar calendar in use in ancient Rome; replaced by the Julian calendar in 46 BC
双语例句
The ninth day before the ides of a month; in the ancient Roman calendar, the seventh day of March, May, July, or October and the fifth day of the other months. 古罗马历中自三、五、七、十各月的十五日起算的前第九日即三、五、七、十各月的第七日; 其它各月的第五日