exoplanet

noun

exo·​plan·​et ˈek-sō-ˌpla-nət How to pronounce exoplanet (audio)
ˌek-sō-ˈpla-
: a planet orbiting a star that is not our sun

Examples of exoplanet in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The world's first commercial deep space astronomy telescope is set to search for stars that could host habitable exoplanets in their orbits. Tereza Pultarova, Space.com, 17 Oct. 2025 But even if that purported lunar companion proves illusory, this new method of tracking down mysterious sources of unexplained material around giant exoplanets could become a definitive pathway for future exomoon finds. Nola Taylor Tillman, Scientific American, 13 Oct. 2025 And of stars below 10% of the Sun’s metallicity, only 10 systems, ever, have been found to have an exoplanet. Big Think, 10 Oct. 2025 Today's talkers Astronomers have found more than 6,000 exoplanets. Nicole Fallert, USA Today, 23 Sep. 2025 See All Example Sentences for exoplanet

Word History

First Known Use

1992, in the meaning defined above

Time Traveler
The first known use of exoplanet was in 1992

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Cite this Entry

“Exoplanet.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/exoplanet. Accessed 24 Oct. 2025.

Last Updated: - Updated example sentences
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