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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
Coronal holes allow solar wind to escape from the sun more readily, resulting in streams of relatively fast solar wind.
—Daisy Dobrijevic, Space.com, 3 Jan. 2025
The northern lights, or aurora borealis, represent waves of light from solar wind, creating a display of moving lights in the night sky.
—Jalen Williams, Detroit Free Press, 31 Dec. 2024
The mission consists of two satellites that will travel in an elliptical orbit above Earth for the next two years, allowing scientists to study aspects of the sun’s surface, including why the outer atmosphere is hotter than the sun itself, coronal mass ejections and how solar winds accelerate.
—Ty Roush, Forbes, 30 Dec. 2024
The data will help scientists understand how material in that region gets heated to millions of degrees, trace the origin of solar wind, and discover how energetic particles are accelerated to near light speed.
—April Rubin, Axios, 27 Dec. 2024
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Word History
First Known Use
1958, in the meaning defined above
Dictionary Entries Near solar wind
Cite this Entry
“Solar wind.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solar%20wind. Accessed 20 Jan. 2025.
Kids Definition
solar wind
noun
: the continuous radiation of charged particles from the sun's surface
More from Merriam-Webster on solar wind
Britannica.com: Encyclopedia article about solar wind
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