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 This is followed by the sun’s debut in Libra and a power-hungry square between Venus and Pluto in your sign. Valerie Mesa, Peoplemag, 7 Sep. 2024 You were born with Pluto in your ninth house of philosophies and beliefs, but your ex’s Venus is directly squaring off with your natal Pluto, right in your 12th house of subconscious energies. Roya Backlund, StyleCaster, 6 Sep. 2024 The waxing crescent Moon in your sign opposes Uranus, creates a trine with Neptune, and forms a sextile with Pluto. Jennifer Culp, Them, 6 Sep. 2024 The discovery is part of scientists’ attempt to find new targets for NASA’s New Horizons spacecraft, which left Earth in 2006 to fly by Pluto, but has since become the first mission to observe the Kuiper Belt on the outer edge of the solar system beyond Neptune. Jamie Carter, Forbes, 5 Sep. 2024 See all Example Sentences for Pluto 

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 11 Sep. 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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