new moon

noun

1
: the moon's phase when it is in conjunction with the sun so that its dark side is toward the earth
also : the thin crescent moon seen shortly after sunset for a few days after the actual occurrence of the new moon phase
2
: the beginning of each Jewish month marked by a special liturgy

Examples of new moon 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.
There will be a new moon on July 24, which is your cue to recharge your mind, body and spirit: journal, meditate or finally book that therapy session. Valerie Mesa, People.com, 22 July 2025 The holiday, widely celebrated throughout Asia, begins on the first new moon of the lunar calendar and ends on the first full moon. Deborah Sengupta Stith, Austin American Statesman, 2 July 2025 The best viewing time is typically between midnight and 5 a.m. local time, during new moon nights in Milky Way season. Diana Leyva, The Tennessean, 2 July 2025 Schedule your Milky Way pursuits for around five nights before and after a new moon to avoid lunar light. Stephanie Vermillion, Outside Online, 3 July 2025 See All Example Sentences for new moon

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Time Traveler
The first known use of new moon was before the 12th century

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Cite this Entry

“New moon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/new%20moon. Accessed 6 Aug. 2025.

Kids Definition

new moon

noun
: the moon's phase when its dark side is toward the earth
also : the thin curved outline of the moon seen shortly after sunset for a few days after the actual occurrence of the new moon phase

More from Merriam-Webster on new moon

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