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.
The pool formed via collapse based on the lack of surrounding ejecta. — Julia Jacobo, ABC News, 23 June 2026 The moon has patterns of ejecta that formed when asteroids struck the lunar surface and then ejected material onto the surface. — Evan Bush, NBC news, 6 Apr. 2026 Finally, its now-inert core contracts down to form a white dwarf, while the prior ejecta get heated up and ionized, creating a planetary nebula. — Big Think, 20 Feb. 2026 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 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

Rhymes for ejecta

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Browse Nearby Words

eject
ejecta
ejectamenta
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Cite this Entry

“Ejecta.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ejecta. Accessed 7 Jul. 2026.

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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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