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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Russell and his colleagues did some calculations and found that solar flares could actually be over 100 million degrees Fahrenheit, and quite possibly hotter. Nell Greenfieldboyce, NPR, 5 Sep. 2025 Particles within solar flares may reach temperatures more than six times higher than scientists previously believed—offering an explanation to a long-standing astrophysical puzzle about the Sun. Melissa Fleur Afshar, MSNBC Newsweek, 3 Sep. 2025 Northern lights, or the aurora borealis, occur when solar activity — such as solar flares or coronal mass ejections — triggers magnetic storms. Valerie Mesa, People.com, 2 Sep. 2025 The findings show that one type of SEE is tied to intense solar flares, explosive bursts from smaller patches of the Sun’s surface, while another stems from coronal mass ejections (CMEs), massive eruptions of hot gas from the Sun’s atmosphere. Neetika Walter, Interesting Engineering, 1 Sep. 2025 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

Browse Nearby Words

Cite this Entry

“Solar flare.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/solar%20flare. Accessed 9 Sep. 2025.

Kids Definition

solar flare

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

More from Merriam-Webster on solar flare

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!