planet

noun
plan·​et | \ ˈpla-nət How to pronounce planet (audio) \

Definition of planet

1a(1) : any of the large bodies that revolve around the sun in the solar system
(2) : a similar body associated with another star
b : earth usually used with the one of the hottest places on the planet
c : any of the seven celestial bodies sun, moon, Venus, Jupiter, Mars, Mercury, and Saturn that in ancient belief have motions of their own among the fixed stars
2 : a celestial body held to influence the fate of human beings
3 : a person or thing of great importance : luminary
planet table

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Other Words from planet

planetlike \ ˈpla-​nət-​ˌlīk How to pronounce planetlike (audio) \ adjective

Synonyms for planet

Synonyms

earth, globe, world

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Did You Know?

Planet goes back to ancient Greek planēt- (literally, "wanderer"), which is derived from "planasthai," a Greek verb which means "to wander." The name "planet" was originally applied to any of seven visible celestial bodies which appeared to move independently of the fixed stars - the sun, the moon, Mercury, Venus, Mars, Jupiter, and Saturn. In the 17th century, "planet" began to be used specifically of the rocky or gaseous bodies that orbit around the sun - a definition which excluded the moon and, obviously, the sun, but included the Earth and, as they were discovered, Uranus, Neptune, and Pluto. In 2006, the International Astronomical Union developed a narrower definition of "planet," effectively demoting Pluto to the status of a "dwarf planet," a celestial body that is spherical and orbits the sun but is not large enough to disturb other objects from its orbit.

Examples of planet in a Sentence

our collective responsibility to conserve the planet and its natural resources for future generations

Recent Examples on the Web

Saudi Arabia’s leaders have historically shunned the spotlight, but over the past several years, Crown Prince Mohammed bin Salman has become one of the most controversial and scrutinized people on the planet. Karen Elliott House, WSJ, "The Making of Saudi Arabia’s Energetic, Ruthless Crown Prince," 12 Apr. 2019 No single telescope on the planet has the power to view a black hole directly. David Grossman, Popular Mechanics, "How They Got the Black Hole Picture That Changed Science," 10 Apr. 2019 Gigi Hadid is one of the biggest models on the planet and boasts 47 million followers on Instagram alone, but navigating fame hasn't been the easiest task for the 23-year-old. Erica Gonzales, Harper's BAZAAR, "Gigi Hadid Tears Up While Discussing How She's Dealt with Fame," 3 Apr. 2019 Muslim women are some of the most diverse and dynamic people on the planet. Shammara Lawrence, Allure, "What MuslimGirl's Amani Al-Khatahtbeh Wants to See From the Beauty Industry in 2019," 27 Mar. 2019 Scientists know the mysterious substance makes up the majority of all matter in the universe, vastly outnumbering normal matter like stars, planets, and people. Avery Thompson, Popular Mechanics, "Scientists Rule Out Hawking Theory for Source of Dark Matter," 4 Apr. 2019 Culture This just in: sexism now has extended past planet earth to literal outer space. Abby Gardner, Glamour, "NASA Cancels First All-Female Spacewalk Because They Don’t Have Enough Spacesuits to Fit Women," 26 Mar. 2019 In a sense, Curiosity is the older sibling to InSight, the new rover that recently deployed a seismograph into the planet's surface. Cyrus Farivar, Ars Technica, "Without question, these are 2018’s best space books for kids," 29 Dec. 2018 The Future Will Be Pedestrianized Prize The war on cars (also the name of an excellent new podcast) comes home as fires burn, sea levels rise, and the planet warms. Mark Lamster, Curbed, "2018 in architecture: The good, the bad, and the urbanism," 27 Dec. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'planet.' 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 planet

14th century, in the meaning defined at sense 1a

History and Etymology for planet

Middle English planete, from Anglo-French, from Late Latin planeta, modification of Greek planēt-, planēs, literally, wanderer, from planasthai to wander — more at floor

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Statistics for planet

Last Updated

22 Apr 2019

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Time Traveler for planet

The first known use of planet was in the 14th century

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More Definitions for planet

planet

noun
plan·​et | \ ˈpla-nət How to pronounce planet (audio) \

Kids Definition of planet

: any large heavenly body that orbits a star (as the sun)

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More from Merriam-Webster on planet

Rhyming Dictionary: Words that rhyme with planet

Thesaurus: All synonyms and antonyms for planet

Spanish Central: Translation of planet

Nglish: Translation of planet for Spanish Speakers

Britannica English: Translation of planet for Arabic Speakers

Britannica.com: Encyclopedia article about planet

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