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ejecta

noun

ejec·​ta i-ˈjek-tə How to pronounce ejecta (audio)
plural in form but singular or plural in construction
: material thrown out (as from a volcano)

Examples of ejecta 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.
As the explosion grew larger and smacked into nearby matter, the shape started flattening while the ejecta’s axis of symmetry remained stable. Andrew Paul, Popular Science, 13 Nov. 2025 However, the axis of symmetry of the ejecta stayed the same. Chris Young, Interesting Engineering, 13 Nov. 2025 Scientists have always assumed that when this stellar ejecta violently slams into dense gas surrounding the dying star, known as the circumstellar medium, this generates narrow emission lines in the light or spectra seen from Type II supernovas. Robert Lea, Space.com, 30 Oct. 2025 See All Example Sentences for ejecta

Word History

Etymology

New Latin, from Latin, neuter plural of ejectus

First Known Use

1886, in the meaning defined above

Time Traveler
The first known use of ejecta was in 1886

Browse Nearby Words

Cite this Entry

“Ejecta.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ejecta. Accessed 27 Nov. 2025.

Medical Definition

ejecta

noun
ejec·​ta i-ˈjek-tə How to pronounce ejecta (audio)
: matter (as vomit) ejected from the body
Last Updated: - Updated example sentences
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