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 awaymooned 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

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Other Words from moon

Noun

moonlike \ ˈmün-​ˌlīk How to pronounce moonlike (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 charger currently juicing up your MacBook Pro is probably more powerful than the Apollo 11's onboard computer that guided the first astronauts to the moon. Courtney Linder, Popular Mechanics, "Your USB-C Charger Is More Powerful Than Apollo 11's Computer," 14 Feb. 2020 That's 15 times the distance from Earth to the moon, according to NASA. Ashley Strickland, CNN, "Massive asteroid will swing by Earth after Valentine's Day," 14 Feb. 2020 During the Apollo missions, he was credited with helping to design the seismographic equipment taken to the moon. Emily Langer, BostonGlobe.com, "Frank Press, guiding force in US science policy for years, dies at 95," 10 Feb. 2020 The Trump budget also promises a $3 billion increase — to $25 billion — for NASA in hopes of returning astronauts to the moon and on to Mars. Andrew Taylor, Anchorage Daily News, "Trump budget to face skepticism, overwhelming politics," 10 Feb. 2020 The Trump budget also promises a $3 billion increase — to $25 billion — for NASA in hopes of returning astronauts to the moon and on to Mars. Andrew Taylor, Fortune, "Trump’s $4.8 trillion budget proposal revisits rejected cuts to domestic programs," 10 Feb. 2020 Some have expressed concern that MSR’s budget could be cannibalized by NASA’s Artemis program, which aims to return U.S. astronauts to the moon sometime this decade. Robin George Andrews, Scientific American, "Rocks, Rockets and Robots: The Plan to Bring Mars Down to Earth," 6 Feb. 2020 Land two human missions annually on the moon after the initial 2028 touchdown. Elizabeth Howell, Scientific American, "Proposed House Bill Would Delay NASA's Return to the Moon," 28 Jan. 2020 Only 730 days until the next opportunity to party on the moon. Amber Elliott, Houston Chronicle, "Museum of Fine Arts, Houston's biennial Art of the Islamic Worlds Gala raises $945,000," 27 Jan. 2020 Recent Examples on the Web: Verb Many on social media, however, did not find the mooning pumpkin man offensive and hit out at HOA’s policies. Alexandra Deabler, Fox News, "Homeowner censors Halloween decoration after HOA found the mooning pumpkin man offensive," 16 Oct. 2019 The paintings in the last two groups show their backsides, as if mooning viewers. David Pagel, Los Angeles Times, "In Dona Nelson’s magically messy paintings, the back is as revelatory as the front," 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, "The 5 best episodes of 'Designing Women,' in honor of its arrival on Hulu," 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, "Smokey Bear, tarantula trek, censoring Adam and Eve: News from around our 50 states," 9 Aug. 2019 Ultimately, one of the main goals of the program is to offset the cost of running the ISS—about $3 billion to $4 billion per year—as NASA shifts its spending from the aging station to moon and Mars missions. Stefanie Waldek, Condé Nast Traveler, "You Can Soon Vacation in Space for $35,000 Per Night," 10 June 2019 Then later, upon being released on bail, the man bizarrely dropped his pants and mooned photographers outside the court building. Fox News, "Man late for Ryanair flight arrested for chasing down plane on Dublin Airport tarmac," 28 Sep. 2018 The whole reason for mooning a group text in the first place. Madeline Buxton, refinery29.com, "Dear Apple, You Forgot Some Very Important "Do Not Disturb" Settings," 6 June 2018 She and Tom Arnold had mooned the crowd at a World Series game to show off their matching tattoos. Kate Stanhope, latimes.com, "Rocky road: Roseanne Barr's rollercoaster Hollywood ride," 10 Apr. 2018

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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Statistics for moon

Last Updated

26 Feb 2020

Cite this Entry

“Moon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moon. Accessed 26 Feb. 2020.

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More Definitions for moon

moon

noun
How to pronounce moon (audio)

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)

informal : 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

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More from Merriam-Webster on moon

Thesaurus: All synonyms and antonyms for moon

Spanish Central: Translation of moon

Nglish: Translation of moon for Spanish Speakers

Britannica English: Translation of moon for Arabic Speakers

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