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
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Your sign ruler Pluto begins the season in Capricorn. Jennifer Culp, Them, 16 Oct. 2024 When love planet Venus joins forces with powerhouse Pluto, there is a greater depth, passion and desire for intensity. Valerie Mesa, People.com, 16 Oct. 2024 Three former leaders are up next, with Taylor Swift’s The Tortured Poets Department rising one spot to No. 6 (45,000 equivalent album units; up 1%), Post Malone’s F-1 Trillion dips 6-7 (43,000; down 8%) and Future’s Mixtape Pluto falls 3-8 (40,000; down 28%). Keith Caulfield, Billboard, 13 Oct. 2024 The dwarf planets Pluto, Charon and Ceres could also have subsurface oceans below a surface ice layer. Jamie Carter, Forbes, 13 Oct. 2024 See all Example Sentences for Pluto 

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 8 Nov. 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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