The interval between two successive passages of the moon through the same solstitial or equinoctial point.
Late 17th century; earliest use found in John Goad (1616–1689), headmaster and meteorologist.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。