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1

moon

play
noun \ˈmün\

Simple Definition of moon

  • the moon : 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

Source: Merriam-Webster's Learner's Dictionary

Full Definition of moon

  1. 1 a often capitalized :  the earth's natural satellite that shines by the sun's reflected light, revolves about the earth from west to east in about 2912 days with reference to the sun or about 2713 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 c :  satellite 2; specifically :  a natural satellite of a planet

  2. 2 :  an indefinite usually extended period of time <a labor of many moons>

  3. 3 :  moonlight

  4. 4 :  something that resembles a moon: as a :  a highly translucent spot on old porcelain b :  lunule c slang :  naked buttocks

  5. 5 :  something impossible or inaccessible <reach for the moon>

moonlike play \-ˌlīk\ adjective
over the moon
  1. :  very pleased :  in high spirits

Examples of moon in a sentence

  1. The telescope makes the craters on the surface of the moon incredibly clear.

  2. the orbit of the Moon around the Earth

  3. Europa and Io are both moons of Jupiter.

  4. a planet orbited by one moon



Origin of moon

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


First Known Use: before 12th century


2

moon

verb

Simple Definition of moon

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

Source: Merriam-Webster's Learner's Dictionary

Full Definition of moon

  1. transitive verb
  2. 1 :  to spend in idle reverie :  dream —used with away

  3. 2 slang :  to expose one's naked buttocks to

  4. intransitive verb
  5. :  to spend time in idle reverie :  behave abstractedly

Examples of moon in a sentence

  1. One of the boys mooned the crowd.

  2. One of the boys mooned at the crowd.



1836

First Known Use of moon

1836



MOON Defined for Kids

1

moon

play
noun \ˈmün\

Definition of moon for Students

  1. 1 :  the natural heavenly body that shines by reflecting light from the sun and revolves about the earth in about 2912 days

  2. 2 :  satellite 1




2

moon

play
verb

Definition of moon for Students

moonedmooning




Medical Dictionary

moon

play
noun \ˈmün\

Medical Definition of moon

  1. :  lunula a





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