名詞 lunation:

1. the period between successive new moons (29.531 days)
   同義詞：lunar month, moon, synodic month

lu.na.tion

n.（名詞）
The time that elapses between successive new moons, averaging 29 days, 2 hours, 44 minutes; a lunar month.
朔望月：相繼兩次新月間的時(shí)期周期，平均二十九天十二小時(shí)四十四分；一個(gè)朔望月

來(lái)源：
Middle English lunacioun
中古英語(yǔ) lunacioun
from Medieval Latin lôn3tiô lôn3tiôn-
源自 中世紀(jì)拉丁語(yǔ) lôn3tiô lôn3tiôn-
from Latin lôna * see lunar
源自 拉丁語(yǔ) lôna *參見(jiàn) lunar