plural in form but singular or plural in construction
: material thrown out (as from a volcano)
Examples of ejecta in a Sentence
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Previously, geophysicists had argued that these transitions represent the difference between volcanic materials above and ejecta from impacts buried below, and a change from porous rock (i.e. filled with cracks and hollows) to solid rock at 12 miles (20 kilometers) deep.
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Keith Cooper, Space.com, 17 Mar. 2025
From there, these dense clumps were sprinkled with oxygen and other next-generation elements by the supernova’s expanding blast front of ejecta.
—Conor Feehly, Scientific American, 4 Mar. 2025
And a catalog of such objects could be valuable for planetary defense models assessing the impact risk of near-Earth objects, scientists say, as the models currently do not consider lunar ejecta as a potential source of near-Earth asteroids.
—Sharmila Kuthunur, Space.com, 24 Jan. 2025
The crater is ringed by bright ejecta, in reference to rocky debris thrown out by the asteroid impact.
—Robert Lea, Space.com, 9 Jan. 2025
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Keith Cooper, Space.com, 17 Mar. 2025
From there, these dense clumps were sprinkled with oxygen and other next-generation elements by the supernova’s expanding blast front of ejecta.
—Conor Feehly, Scientific American, 4 Mar. 2025
And a catalog of such objects could be valuable for planetary defense models assessing the impact risk of near-Earth objects, scientists say, as the models currently do not consider lunar ejecta as a potential source of near-Earth asteroids.
—Sharmila Kuthunur, Space.com, 24 Jan. 2025
The crater is ringed by bright ejecta, in reference to rocky debris thrown out by the asteroid impact.
—Robert Lea, Space.com, 9 Jan. 2025
See All Example Sentences for ejecta
Cite this Entry
“Ejecta.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ejecta. Accessed 23 Apr. 2025.
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