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
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Featuring a 130-foot-wide (39.3m) mirror, the ELT will study the universe in visible light to provide a more detailed view of potentially habitable exoplanets, the formation of the first galaxies, supermassive black holes, and the nature of dark matter and dark energy. Samantha Mathewson, Space.com, 23 Apr. 2025 Now, with thousands of exoplanets in view, the temptation to overinterpret is strong — and some are jumping the gun. Ashley Strickland, CNN Money, 17 Apr. 2025 From 2009 and 2018, Kepler revealed that the universe was full of exoplanets. Shi En Kim, Smithsonian Magazine, 1 Apr. 2025 The discovery of thousands of wildly different exoplanets has forever changed our understanding of the cosmos. Jake Parks, Discover Magazine, 24 Mar. 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 1 May. 2025.

Last Updated: - Updated example sentences
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