What does Planet mean?

Definitions for Planet
ˈplæn ɪtplan·et

This dictionary definitions page includes all the possible meanings, example usage and translations of the word Planet.

Princeton's WordNet

  1. planet, major planetnoun

    (astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction

  2. satellite, planetnoun

    a person who follows or serves another

  3. planetnoun

    any celestial body (other than comets or satellites) that revolves around a star


  1. planetnoun

    Each of the seven major bodies which move relative to the fixed stars in the night skythe Moon, Mercury, Venus, the Sun, Mars, Jupiter and Saturn.

  2. planetnoun

    A body which orbits the Sun directly and is massive enough to be in hydrostatic equilibrium (effectively meaning a spheroid) and to dominate its orbit; specifically, the eight major bodies of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. (Pluto was considered a planet until 2006 and has now been reclassified as a dwarf planet.)

  3. planetnoun

    A large body which directly orbits any star (or star cluster) but which has not attained nuclear fusion.

  4. Etymology: From planete, from planeta, from planeta, planetes, from variant of, from πλανάω, of unknown origin. Perhaps from a pel-, cognate with palor, flana, flanta. More at flaunt.

Samuel Johnson's Dictionary

  1. PLANETnoun

    Planets are the erratick or wandering stars, and which are not like the fixt ones always in the same position to one another: we now number the earth among the primary planets, because we know it moves round the sun, as Saturn, Jupiter, Mars, Venus and Mercury do, and that in a path or circle between Mars and Venus: and the moon is accounted among the secondary planets or satellites of the primary, since she moves round the earth: all the planets have, besides their motion round the sun, which makes their year, also a motion round their own axes, which makes their day; as the earth’s revolving so makes our day and night: it is more than probable, that the diameters of all the planets are longer than their axes: we know ’tis so in our earth; and Flamsteed and Cassini found it to be so in Jupiter: Isaac Newton asserts our earth’s equatorial diameter to exceed the other about thirty-four miles; and indeed else the motion of the earth would make the sea rise so high at the equator, as to drown all the parts thereabouts. John Harris

    Etymology: planeta, Lat. ϖλαναω; planette, Fr.

    Barbarous villains! hath this lovely face
    Rul’d like a wand’ring planet over me,
    And could it not inforce them to relent. William Shakespeare.

    And planets, planet-struck, real eclipse
    Then suffer’d. John Milton, Paradise Lost, b. x.

    There are seven planets or errant stars in the lower orbs of heaven. Thomas Browne, Vulgar Errours, b. iv.


  1. Planet

    A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited by a protoplanetary disk. Planets grow in this disk by the gradual accumulation of material driven by gravity, a process called accretion. The Solar System has at least eight planets: the terrestrial planets Mercury, Venus, Earth and Mars, and the giant planets Jupiter, Saturn, Uranus and Neptune. These planets each rotate around an axis tilted with respect to its orbital pole. All of them possess an atmosphere, although that of Mercury is tenuous, and some share such features as ice caps, seasons, volcanism, hurricanes, tectonics, and even hydrology. Apart from Venus and Mars, the Solar System planets generate magnetic fields, and all except Venus and Mercury have natural satellites. The giant planets bear planetary rings, the most prominent being those of Saturn. The word planet probably comes from the Greek planḗtai, meaning "wanderers". In antiquity, this word referred to the Sun, Moon, and five points of light visible by the naked eye that moved across the background of the stars—namely, Mercury, Venus, Mars, Jupiter and Saturn. Planets have historically had religious associations: multiple cultures identified celestial bodies with gods, and these connections with mythology and folklore persist in the schemes for naming newly discovered Solar System bodies. Earth itself was recognized as a planet when heliocentrism supplanted geocentrism during the 16th and 17th centuries. With the development of the telescope, the meaning of planet broadened to include objects only visible with assistance: the ice giants Uranus and Neptune; Ceres and other bodies later recognized to be part of the asteroid belt; and Pluto, later found to be the largest member of the collection of icy bodies known as the Kuiper belt. The discovery of other large objects in the Kuiper belt, particularly Eris, spurred debate about how exactly to define a planet. The International Astronomical Union (IAU) adopted a standard by which the four terrestrials and four giants qualify, placing Ceres, Pluto and Eris in the category of dwarf planet, although many planetary scientists have continued to apply the term planet more broadly.Further advances in astronomy led to the discovery of over five thousand planets outside the Solar System, termed exoplanets. These include hot Jupiters—giant planets that orbit close to their parent stars—like 51 Pegasi b, super-Earths like Gliese 581c that have masses in between that of Earth and Neptune; and planets smaller than Earth, like Kepler-20e. Multiple exoplanets have been found to orbit in the habitable zones of their stars, but Earth remains the only planet known to support life.


  1. planet

    A planet is a celestial body that orbits around a star, has sufficient mass for its self-gravity to overcome rigid body forces thereby assuming a hydrostatic equilibrium (round or nearly round) shape, and has cleared its orbit of other debris. It does not produce its own light and shines by reflecting the sunlight. The eight recognized planets in our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Webster Dictionary

  1. Planetnoun

    a celestial body which revolves about the sun in an orbit of a moderate degree of eccentricity. It is distinguished from a comet by the absence of a coma, and by having a less eccentric orbit. See Solar system

  2. Planetnoun

    a star, as influencing the fate of a men

  3. Etymology: [OE. planete, F. plante, L. planeta, fr. Gr. , and a planet; prop. wandering, fr. to wander, fr. a wandering.]


  1. Planet

    A planet is an astronomical object orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals. The term planet is ancient, with ties to history, science, mythology, and religion. The planets were originally seen by many early cultures as divine, or as emissaries of deities. As scientific knowledge advanced, human perception of the planets changed, incorporating a number of disparate objects. In 2006, the International Astronomical Union officially adopted a resolution defining planets within the Solar System. This definition has been both praised and criticized and remains disputed by some scientists because it excludes many objects of planetary mass based on where or what they orbit. While eight of the planetary bodies discovered before 1950 remain "planets" under the modern definition, some celestial bodies, such as Ceres, Pallas, Juno, Vesta, and Pluto, that were once considered planets by the scientific community are no longer viewed as such.

Chambers 20th Century Dictionary

  1. Planet

    plan′et, n. one of the bodies in the solar system which revolve in elliptic orbits round the sun.—n. Planetā′rium, a machine showing the motions and orbits of the planets.—adjs. Plan′etary, pertaining to the planets: consisting of, or produced by, planets: under the influence of a planet: erratic: revolving; Planet′ic, -al.—n. Plan′etoid, a celestial body having the form or nature of a planet: one of a number of very small planets, often called asteroids, moving round the sun between Mars and Jupiter.—adjs. Planetoi′dal; Plan′et-strick′en, Plan′et-struck (astrol.), affected by the influence of the planets: blasted.—n. Plan′etule, a little planet.—Minor planets, the numerous group of very small planets which is situated in the solar system between Mars and Jupiter. [Fr. planète—Gr. planētēs, wanderer—planān, to make to wander.]

The Roycroft Dictionary

  1. planet

    A planet is a large body of matter entirely surrounded by a void, as distinguished from a clergyman, who is a large void entirely surrounded by matter.

Editors Contribution

  1. planet

    A body that orbits the Sun connected to the universe.

    The planet earth is so very beautiful and respected.

    Submitted by MaryC on March 22, 2020  

Suggested Resources

  1. planet

    Song lyrics by planet -- Explore a large variety of song lyrics performed by planet on the Lyrics.com website.

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British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'Planet' in Nouns Frequency: #1602

Anagrams for Planet »

  1. pental

  2. platen

  3. pantle

How to pronounce Planet?

How to say Planet in sign language?


  1. Chaldean Numerology

    The numerical value of Planet in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of Planet in Pythagorean Numerology is: 5

Examples of Planet in a Sentence

  1. Milo Cress:

    Here’s the thing: this planet’s not a place that kids will inherit at some point, far off in the distant future. We live here right now, and we share this planet already.”

  2. Loren Spivack:

    Nothing you do in your life will harm the planet in any way, shape or form; Nothing you do in your life will help the planet in any way shape or form. The planet is going to outlive us all!

  3. Scott Adams:

    We're a planet of nearly six billion ninnies living in a civilization that was designed by a few thousand amazingly smart deviants.

  4. Jamela Dunbar:

    We the people share Planet Earth together, as one people, one nation, and one destiny. So, why do we say we are so different from each other? When indeed, we are not. Yes, we have our own personal preferences, beliefs, and values. But we also have many similarities in common. And the biggest one is living on Planet Earth. And sharing the lands together, as one human race among many other humans.”

  5. Shiladitya DasSarma:

    That's where it might make a difference when we look at exoplanets. We would want to consider that the pigments on an alien planet might be different than what we have on modern Earth, and if the Purple Earth hypothesis was correct and there was a dominance of purple organisms in the early Earth, then we might be able to find another planet that's at an earlier stage of evolution of the planet, where the purple pigments might have dominated.

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"Planet." Definitions.net. STANDS4 LLC, 2023. Web. 27 Sep. 2023. <https://www.definitions.net/definition/Planet>.

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    a signal that temporarily stops the execution of a program so that another procedure can be carried out
    • A. attend
    • B. refine
    • C. accompany
    • D. interrupt

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