sunspot
noun
sun·spot
ˈsən-ˌspät 
: any of the dark spots that appear at times on the sun's surface and are usually visible only through a telescope
Examples of sunspot in a Sentence
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The intense solar flare originated from sunspot region AR4046 and was accompanied by a spectacular filament eruption and coronal mass ejection (CME) — an expulsion of plasma and magnetic field from the sun.
—
Daisy Dobrijevic, Space.com, 28 Mar. 2025
While sunspots are in many ways the opposite of coronal holes, this is still good news for those after a glimpse of the northern lights—as sunspots are known to release both solar flares and coronal mass ejections, which can trigger stunning aurora here on Earth.
—Barbara A. Perry, Newsweek, 28 Jan. 2025
Each sunspot is home to a smaller magnetic field—although sunspots themselves are often the size of Earth.
—Meghan Bartels, Scientific American, 30 Dec. 2024
When solar cycle activity picks up sunspots appear as black areas on the sun's surface.
—Jamie Carter, Space.com, 28 Feb. 2025
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Daisy Dobrijevic, Space.com, 28 Mar. 2025
While sunspots are in many ways the opposite of coronal holes, this is still good news for those after a glimpse of the northern lights—as sunspots are known to release both solar flares and coronal mass ejections, which can trigger stunning aurora here on Earth.
—Barbara A. Perry, Newsweek, 28 Jan. 2025
Each sunspot is home to a smaller magnetic field—although sunspots themselves are often the size of Earth.
—Meghan Bartels, Scientific American, 30 Dec. 2024
When solar cycle activity picks up sunspots appear as black areas on the sun's surface.
—Jamie Carter, Space.com, 28 Feb. 2025
See All Example Sentences for sunspot
Cite this Entry
“Sunspot.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sunspot. Accessed 8 Apr. 2025.
Copy CitationKids Definition
sunspot
noun
sun·spot
-ˌspät
: one of the dark spots that appear from time to time on the sun's surface and are usually visible only through a telescope
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