solar flare

noun

: a sudden temporary outburst of energy from a small area of the sun's surface

called also flare

Examples of solar flare in a Sentence

Recent Examples on the Web
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The past day has seen the sun unleash a series of powerful solar flares, including two X-class flares and corresponding eruptions from a sunspot region located on the western limb that caused radio blackouts on Earth, while casting masses of plasma into space known as coronal mass ejections. Anthony Wood, Space.com, 24 Apr. 2026 As the sun releases solar flares, plasma particles shoot toward Earth. Janet Loehrke, USA Today, 16 Apr. 2026 Meanwhile, forecasters at NOAA’s Space Weather Prediction Center report generally low solar flare activity but note increasing solar wind speeds and magnetic disturbances that can help energize auroras. Valerie Mesa, PEOPLE, 1 Apr. 2026 First, the crew will assess their ability to protect themselves from high radiation events like solar flares. Richard Tribou, The Orlando Sentinel, 1 Apr. 2026 See All Example Sentences for solar flare

Word History

First Known Use

1938, in the meaning defined above

Time Traveler
The first known use of solar flare was in 1938

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Cite this Entry

“Solar flare.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solar%20flare. Accessed 28 Apr. 2026.

Kids Definition

solar flare

noun
: a sudden temporary outburst of energy from a small area of the sun's surface

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