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 discovery, made by the James Webb Space Telescope, is a major step forward in filling in gaps in our understanding of how exoplanets develop. Keith Cooper, Space.com, 19 May 2025 What to know about the distant exoplanet When is the Lyrid meteor shower peaking? Eric Lagatta, USA Today, 22 Apr. 2025 As exoplanets pass in front of their host star, from the perspective of Earth, light moves through their atmospheres, allowing Webb to detect the chemical signatures of gases within them. Ashley Strickland, CNN Money, 17 Apr. 2025 This is not the first time that this exoplanet demonstrated — if not signs of life, then at least precursors for it. Paul Smaglik, Discover Magazine, 17 Apr. 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 5 Jun. 2025.

Last Updated: - Updated example sentences
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