epact

[天] 岁首月龄,闰余

词形变化

epacts 复数 epacts

释义与例句

n.
  1. 1.

    the time (number of days) by which a solar year exceeds twelve lunar months; it is used in the calculation of the date of Easter

词源

From French épacte, from Latin epactae, from Ancient Greek ἐπακταί (epaktaí, “intercalary days”), feminine plural of ἐπακτός (epaktós, “brought on or in, added”).

来源：wiktionary