moon

noun
\ ˈmün How to pronounce moon (audio) \

Definition of moon

 (Entry 1 of 2)

1a often capitalized : the earth's natural satellite (see satellite sense 1a) that shines by the sun's reflected light, revolves about the earth from west to east in about 29¹/₂ days with reference to the sun or about 27¹/₃ days with reference to the stars, and has a diameter of 2160 miles (3475 kilometers), a mean distance from the earth of about 238,900 miles (384,400 kilometers), and a mass about one eightieth that of the earth usually used with the
b : one complete moon cycle consisting of four phases (see phase entry 1 sense 1)
c : satellite sense 1 specifically : a natural satellite of a planet the moons of Jupiter
2 : an indefinite usually extended period of time a labor of many moons
3 : moonlight keep out of the moon or it may turn your head— H. R. Haggard
4 : something that resembles a moon: such as
a : a highly translucent (see translucent sense 1) spot on old porcelain
b : lunule
c slang : naked buttocks
5 : something impossible or inaccessible reach for the moon
over the moon
: very pleased : in high spirits

moon

verb
mooned; mooning; moons

Definition of moon (Entry 2 of 2)

transitive verb

1 : to spend in idle reverie : dream used with away mooned the afternoon away
2 slang : to expose one's naked buttocks to One of the boys mooned the crowd.

intransitive verb

: to spend time in idle reverie : behave abstractedly fans mooning over movie stars

Other Words from moon

Noun

moonlike \ ˈmün-​ˌlīk How to pronounce moon (audio) \ adjective

Synonyms for moon

Synonyms: Noun

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Examples of moon in a Sentence

Noun The telescope makes the craters on the surface of the moon incredibly clear. the orbit of the Moon around the Earth Europa and Io are both moons of Jupiter. a planet orbited by one moon Verb One of the boys mooned the crowd. One of the boys mooned at the crowd.
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Recent Examples on the Web: Noun The space agency had been aiming for 2024 for the first moon landing by astronauts in a half-century. NBC News, 10 Nov. 2021 The space agency had been aiming for 2024 for the first moon landing by astronauts in a half-century. Time, 10 Nov. 2021 The space agency had been aiming for 2024 for the first moon landing by astronauts in a half-century. Marcia Dunn, Chron, 9 Nov. 2021 The two men banter about the impact that John Ford, Woody Guthrie, and news coverage of the moon landing had on even their most personal life decisions. Spencer Kornhaber, The Atlantic, 26 Oct. 2021 The band last studio album was 2008’s 4:13 Dream, but Smith told Rolling Stone in 2019 that the band have been working on a new album inspired by the 1969 moon landing. Daniel Kreps, Rolling Stone, 15 Oct. 2021 The Chronicle hailed the event like a moon landing. Peter Hartlaub, San Francisco Chronicle, 10 Oct. 2021 The contractor also brought some vintage know-how to the project thanks to a few employees who have been building homes since before the moon landing. Emma Alpern, Curbed, 22 Sep. 2021 More than 50 years after astronauts trained on Central Oregon’s volcanic terrain for the first moon landing, NASA returned to the region to test new spacesuit technology. Kyle Spurr, oregonlive, 15 Sep. 2021 Recent Examples on the Web: Verb Bart, meanwhile, makes a statement by pulling down his leather and denim trousers to moon the audience. CNN, 4 Oct. 2021 Incredibly, #MeToo Marilyn, her body posed tilting slightly forward, will even be positioned to moon the museum. Christopher Knight Art Critic, Los Angeles Times, 20 Mar. 2021 One of those includes Hayley’s brother Jack (Sam Claflin), haplessly mooning over his dream girl (Olivia Munn), an American war journalist who gets a few muttered zingers, but is otherwise stuck acting, well, dreamy. Amy Nicholson, New York Times, 10 Apr. 2020 He’s even accused demonstrators of mooning security forces to provoke them. Washington Post, 18 Nov. 2019 Many on social media, however, did not find the mooning pumpkin man offensive and hit out at HOA’s policies. Alexandra Deabler, Fox News, 16 Oct. 2019 The paintings in the last two groups show their backsides, as if mooning viewers. David Pagel, Los Angeles Times, 10 Oct. 2019 This episode, best remembered for the moment in which Julia accidentally moons a crowd (including the mayor of Atlanta), is a reminder that the series excelled at physical comedy in addition to sharp and rapid-fire dialogue. Kelly Lawler, USA TODAY, 26 Aug. 2019 Someone apparently isn’t mooning over the huge, 10-by-30-foot mural that shows the bare buttocks of the Garden of Eden couple. USA TODAY, 9 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'moon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of moon

Noun

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

Verb

1836, in the meaning defined at transitive sense 1

History and Etymology for moon

Noun and Verb

Middle English mone, from Old English mōna; akin to Old High German māno moon, Latin mensis month, Greek mēn month, mēnē moon

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Time Traveler for moon

Time Traveler

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

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Dictionary Entries Near moon

moolvee

moon

moon's man

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Statistics for moon

Last Updated

17 Nov 2021

Cite this Entry

“Moon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moon. Accessed 26 Nov. 2021.

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More Definitions for moon

moon

noun

English Language Learners Definition of moon

 (Entry 1 of 2)

: the large round object that circles the Earth and that shines at night by reflecting light from the sun
: a large round object like the moon that circles around a planet other than the Earth

moon

verb

English Language Learners Definition of moon (Entry 2 of 2)

: to bend over and show your bare buttocks to someone as a rude joke or insult

moon

noun
\ ˈmün How to pronounce moon (audio) \

Kids Definition of moon

 (Entry 1 of 2)

1 : the natural heavenly body that shines by reflecting light from the sun and revolves about the earth in about 29¹/₂ days

moon

verb
mooned; mooning

Kids Definition of moon (Entry 2 of 2)

moon

noun
\ ˈmün How to pronounce moon (audio) \

Medical Definition of moon

More from Merriam-Webster on moon

Nglish: Translation of moon for Spanish Speakers

Britannica English: Translation of moon for Arabic Speakers

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