Pluto

noun

Plu·​to ˈplü-(ˌ)tō How to pronounce Pluto (audio)
1
: the Greek god of the underworld compare dis
2
[New Latin] : a dwarf planet occupying an orbit that crosses the orbit of Neptune
Is Pluto a planet?: Usage Guide

In 2006 the International Astronomical Union defined planet in such a way as to exclude Pluto, reclassifying it instead as a dwarf planet. Although discussion of the matter continues, the change has been widely accepted.

Examples of Pluto in a Sentence

Recent Examples on the Web Other sketches that were auctioned this month showed unrealized concept art for Steamboat Willie’s Paddle Boat, Pluto’s Dog House, the Lost Boys Tree and a Casey Jones Jr. roller coaster. Nicholas Rice, Peoplemag, 14 Apr. 2024 On Demand, DirecTV, The Roku Channel, Tubi, Pluto TV, VIZIO WatchFree+, Sling TV, Peacock, Plex, XUMO and the Tribeca Channel. Selena Kuznikov, Variety, 11 Apr. 2024 As the moon and Pluto clash, your personal business is on public display. USA TODAY, 9 Apr. 2024 Since its discovery in Flagstaff, Pluto has become Arizona's favorite dwarf planet. Brenna Gauchat, The Arizona Republic, 26 Mar. 2024 The first Monster Jam FAST channel is now live on free streaming television service Pluto TV across the U.S., Canada, the U.K., France, Spain, Italy and the Nordics with planned launches in Latin America and Brazil later this year. Naman Ramachandran, Variety, 5 Apr. 2024 The cinematic clip features Young Metro and Pluto draped in white suits while walking around a dark room. Michael Saponara, Billboard, 4 Apr. 2024 The cute camper comes with Mickey, Minnie, and Pluto figures, plus a fun camping setup with sleeping bags, a cooking set, s’mores roasting supplies, and a little campfire. Dorian Smith-Garcia, Parents, 4 Apr. 2024 The only thing is, Pluto technically isn't a planet. Li Cohen, CBS News, 1 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'Pluto.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Latin Pluton-, Pluto, from Greek Ploutōn

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of Pluto was in the 14th century

Dictionary Entries Near Pluto

Cite this Entry

“Pluto.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Pluto. Accessed 24 Apr. 2024.

Kids Definition

Pluto

noun
Plu·​to ˈplüt-ō How to pronounce Pluto (audio)
: a large object in the outermost part of the solar system that is often considered one of the planets see note at planet

More from Merriam-Webster on Pluto

Last Updated: - Updated example sentences
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