lunation

noun

lu·​na·​tion lü-ˈnā-shən How to pronounce lunation (audio)
: the period of time averaging 29 days, 12 hours, 44 minutes, and 2.8 seconds elapsing between two successive new moons

Examples of lunation in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Just in time for the full moon in Sagittarius on June 11, this lunation will demand you face relationship dynamics and confront emotional undercurrents, revealing how your partnerships either help or hinder your personal and professional growth. Valerie Mesa, People.com, 4 June 2025 This lunation can also help you in shedding whatever (or whoever) is holding you back from professional success. Meghan Rose, Glamour, 1 June 2025 This lunation could bring a friendship breakthrough — or closure. Dossé-Via Trenou, Refinery29, 29 May 2025 Here's what May's new moon in Gemini means for your zodiac sign Comments An exciting lunation kicks off the unofficial start to summer! Skyler Caruso, People.com, 24 May 2025 See All Example Sentences for lunation

Word History

Etymology

Middle English lunacioun, borrowed from Anglo-French & Latin; Anglo-French lunaison, lunaciun, borrowed from Medieval Latin lūnātiōn-, lūnātiō, from Latin lūna "moon" + -ātiōn-, -ātiō -ation — more at lunar

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of lunation was in the 14th century

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Cite this Entry

“Lunation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lunation. Accessed 17 Jun. 2025.

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