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 2a) 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 2 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

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Other Words from moon

Noun

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

Synonyms for moon

Synonyms: Noun

aeon (or eon), age, blue moon, coon's age, cycle, donkey's years [chiefly British], eternity, forever, long, months

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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 pace was relentless amid fears the Soviets would get to the moon first. Washington Post, "Apollo 11 at 50: Celebrating first steps on another world," 13 July 2019 Astronauts Neil Armstrong and Buzz Aldrin train for the Apollo 11 trip to the moon on April 15, 1969. Alex Stuckey, Houston Chronicle, "Listen: Germs a hot topic for Apollo 11 astronauts in days before launch," 10 July 2019 Most Americans don’t think returning to the moon should be a top priority for the country’s space program, a recent poll found, despite the Trump administration’s goal to do exactly that within five years. Julia Webster, Time, "Most Americans Say Returning to the Moon Shouldn't Be a Space Program Priority," 8 July 2019 Either the humidity levels are out of control, making a trip outdoors as ambitious as a jaunt to the moon. Anne Cohen, refinery29.com, "Hit The Waves From Your Couch With These Summer Surfing Movies," 5 July 2019 Lesbians were more financially vulnerable and culturally invisible; many had lived so long in the closet that coming out in a movie was akin to taking a trip to the moon. Andrea Weiss, The Atlantic, "Creating the First Visual History of Queer Life Before Stonewall," 30 June 2019 Space agencies around the world have talked a lot about sending people back to the moon. Michael Greshko, National Geographic, "Apollo 8's commander reflects on the sights and sounds of the space age," 28 June 2019 Of that age bracket, 26% preferred sending astronauts to Mars and 19% to the moon. Fox News, "Americans prefer to stop asteroids from hitting Earth over going to the Moon or Mars," 20 June 2019 The agency expects to spend as much as $30 billion over the next five years to speed up astronaut missions to the moon. Andy Pasztor, WSJ, "NASA Chief Sees Private Spacecraft Potentially Reaching Moon Before U.S. Astronauts," 19 June 2019

Recent Examples on the Web: Verb

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 days any rocketeer wishing to get staggeringly pie-eyed and maybe moon the Moon will have to hitch a ride with another space agency altogether. David Arky, Smithsonian, "How Do You Make Beer in Space?," 20 Mar. 2018 Who can forget Ilie Nastase pulling down his pants and mooning the chair umpire Charles Hare in Palm Springs in 1976? Cindy Shmerler, New York Times, "Tennis Moves Toward Taking the Human Element Out of Line Calls," 1 Mar. 2018 The old Birmingham guard repaid the favor by using the worlds' largest cast iron statue to perpetually moon the little town that preferred seeking its own stars. Birmingham Magazine, AL.com, "A History of Homewood," 19 Feb. 2018 Until Sunday the biggest threat was guests occasionally mooning or flashing partygoers, says DJ cb shaw, who was a resident DJ at Rehab for six years. Alexei Barrionuevo, Billboard, "Dance Music Industry Says Pool Parties Could Be Vulnerable Following Las Vegas Shooting," 5 Oct. 2017

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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Dictionary Entries near moon

mooley

moolings

moolvee

moon

moon's man

moon after

moonal

Statistics for moon

Last Updated

16 Jul 2019

Look-up Popularity

Time Traveler for moon

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

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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)

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

Comments on moon

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appealing forcibly to the mind or reason

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