ex·​tra·​so·​lar | \ ˌek-strə-ˈsō-lər How to pronounce extrasolar (audio) , -ˌlär \

Definition of extrasolar

: originating or existing outside the solar system extrasolar planets

Examples of extrasolar in a Sentence

Recent Examples on the Web Bean will use the telescope to study extrasolar planets, also called exoplanets, which are planets that orbit stars outside Earth’s solar system. Angie Leventis Lourgos, chicagotribune.com, 24 Dec. 2021 As the project schedule lengthened, its science objectives expanded, especially as extrasolar planets became an increasing topic of interest in the field. Adam Mann, The Christian Science Monitor, 15 Dec. 2021 As for potential extrasolar Mercury-type planets out there? Bruce Dorminey, Forbes, 16 Oct. 2021 Putative extrasolar earths and speculation about microbial fossils on Mars, or even extant life deep within the oceans of one of our solar system’s far-flung frozen moons, remains speculation at this point. Bruce Dorminey, Forbes, 28 June 2021 The motivation there is to understand what happens in the mantle of large extrasolar planets. Quanta Magazine, 15 June 2021 At the time, exomoons, or extrasolar moons—those moons that orbit a planet outside of our own solar system, or exoplanets—were something astrophysicists knew about, but had never captured data from. Courtney Sexton, Smithsonian Magazine, 11 Aug. 2020 These objects have been called extrasolar planets, exosolar planets or exoplanets. Christopher Palma, The Conversation, 16 Dec. 2019 El descubrimiento de un planeta extrasolar con condiciones similares a las de la Tierra desencadena en una épica batalla con una armada de origen desconocido. Los Angeles Times, 22 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'extrasolar.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of extrasolar

1872, in the meaning defined above

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Time Traveler for extrasolar

Time Traveler

The first known use of extrasolar was in 1872

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Dictionary Entries Near extrasolar

extrasensory perception



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Last Updated

31 Dec 2021

Cite this Entry

“Extrasolar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extrasolar. Accessed 20 Jan. 2022.

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More from Merriam-Webster on extrasolar

Britannica English: Translation of extrasolar for Arabic Speakers


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