lunation


lu·na·tion

noun \lü-ˈnā-shən\

Definition of LUNATION

:  the period of time averaging 29 days, 12 hours, 44 minutes, and 2.8 seconds elapsing between two successive new moons

Origin of LUNATION

Middle English lunacioun, from Anglo-French lunaison, from Medieval Latin lunation-, lunatio, from Latin luna
First Known Use: 14th century

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