full moon

noun

: the moon with its whole apparent disk illuminated

Examples of full moon in a Sentence

Recent Examples on the Web
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The short summer nights, combined with this week’s full moon, may make faint aurora harder to see. Jamie Carter, Forbes.com, 31 July 2026 Keep in mind that the relatively short summer nights, combined with this month’s full moon, which reached its peak last night, may make faint auroras harder to spot. Michele Laufik, Martha Stewart, 30 July 2026 Here's what to know about August's full moon and what to expect. Julia Gomez, USA Today, 30 July 2026 The Alpha Capricornids and the Southern Delta Aquariids occur annually, but a full moon usually limits visibility of a meteor shower peak around every three years, Lunsford said. Amen Galinato, CNN Money, 29 July 2026 See All Example Sentences for full moon

Word History

First Known Use

before the 12th century, in the meaning defined above

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

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Cite this Entry

“Full moon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/full%20moon. Accessed 3 Aug. 2026.

Kids Definition

full moon

noun
: the moon with its whole disk lighted
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