✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

full moon

noun

: the moon with its whole apparent disk illuminated

Examples of full 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.
December’s full moon traditionally goes by the Cold Moon, tied to the arrival of winter’s chill and the long nights leading up to the solstice. Valerie Mesa, PEOPLE, 4 Dec. 2025 Get ready stargazers, the final full moon of 2025 rises tonight! Anthony Wood, Space.com, 4 Dec. 2025 The last full moon of 2025 brings the year to a close with a bang. Marie Bladt, Vogue, 4 Dec. 2025 The December full moon is called the cold moon, according to the Old Farmer’s Almanac. Hannah Poukish, Sacbee.com, 4 Dec. 2025 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

Cite this Entry

“Full moon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/full%20moon. Accessed 5 Dec. 2025.

Kids Definition

full moon

noun
: the moon with its whole disk lighted
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!