evection

n. 出差(天文术语)

词形变化

evections 复数 evections

释义与例句

n.
  1. 1.

    Modification of the lunar orbit due to the gravitational effects of the Sun.

    可数 不可数 天文

词源

From Latin evectiōnem, from evectiō (“act of carrying”), from evect-, past participle stem of evehō (“to carry together”), combination of ex- and vehō.

来源：wiktionary