solar wind

noun

: plasma continuously ejected from the sun's surface into and through interplanetary space

Examples of solar wind in a Sentence

Recent Examples on the Web
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This particular storm happened because a co-rotating interaction region — a turbulent gap between fast and slow-moving solar wind streams — struck Earth's atmosphere, according to Spaceweather.com. Jamie Carter, Forbes.com, 29 May 2025 This geomagnetic storm is powered by high-speed solar winds streaming from the coronal hole of the sun’s atmosphere, and it’s headed straight for Earth’s magnetic field. Valerie Mesa, People.com, 29 May 2025 Depending on the speed of the solar wind, DSCOVR can give anywhere from 15 to 60 minutes' warning before a solar storm hits Earth. Daisy Dobrijevic, Space.com, 20 May 2025 The instruments carried by the lander performed many first-of-their kind science and technology demonstrations, including starting the moon's deepest robotic planetary subsurface thermal probe and using an X-ray imager to study the interaction of solar wind and the Earth's magnetic field. Kerry Breen, CBS News, 19 Mar. 2025 See All Example Sentences for solar wind

Word History

First Known Use

1958, in the meaning defined above

Time Traveler
The first known use of solar wind was in 1958

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Cite this Entry

“Solar wind.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solar%20wind. Accessed 3 Jun. 2025.

Kids Definition

solar wind

noun
: the continuous radiation of charged particles from the sun's surface

More from Merriam-Webster on solar wind

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