coronal mass ejection

noun

: a tremendous outburst of energy from the corona of the sun that can cause disruptions in the earth's geomagnetic field
As they had for the January eruption, the researchers relied on an armada of spacecraft to track the disturbance, known as a coronal mass ejection because it originates in the sun's outer atmosphere, or corona.R. Cowen
abbreviation CME
compare solar flare

Examples of coronal mass ejection in a Sentence

Recent Examples on the Web One project will use cameras and spectrometers to uncover more details about the temperature and chemical composition of the corona, as well as capture data about large bursts of solar material from the sun known as coronal mass ejections. Ashley Strickland, CNN, 3 Apr. 2024 During the eclipse, there could even be the chance to witness a coronal mass ejection — a large, spectacular plume of material rising from the sun’s surface, weighing billions of tons, according to NASA. Cnn.com Wire Service, The Mercury News, 1 Apr. 2024 This information helps researchers better understand phenomena such as solar flares, coronal mass ejections and the solar wind, which can have significant impacts on space weather and technology on Earth. The Arizona Republic, 27 Mar. 2024 The storm was prompted by a coronal mass ejection from the sun Friday evening, reaching the Earth early Sunday. Jenna Prestininzi, Detroit Free Press, 25 Mar. 2024 The sun, Earth, the Parker Solar Probe and the Solar Orbiter were all aligned for the coronal mass ejection (CME). Rebecca Boyle, Scientific American, 20 Feb. 2024 Viewers can expect to see wisps, streams, and maybe even a large eruption called a coronal mass ejection. Jenna Anderson, Sunset Magazine, 12 Feb. 2024 Large geomagnetic storms are associated with solar coronal mass ejections, where around a billion tons of plasma from the sun arrive at Earth. Emily Deletter, USA TODAY, 22 Jan. 2024 Several coronal mass ejections appear to have hit Earth, triggering beautiful auroral displays, including the ones over Canada seen in the image at the top of this article, according to NASA. Tom Yulsman, Discover Magazine, 20 Dec. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'coronal mass ejection.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1974, in the meaning defined above

Time Traveler
The first known use of coronal mass ejection was in 1974

Dictionary Entries Near coronal mass ejection

Cite this Entry

“Coronal mass ejection.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coronal%20mass%20ejection. Accessed 27 Apr. 2024.

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