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.
New research suggests that if such an impact were to occur, ejecta blasted from the moon could damage satellites orbiting Earth. Robert Lea, Space.com, 11 July 2025 An asteroid strike would cause ejecta to impact a wide area of the lunar surface, potentially threatening astronauts or a potential lunar base. Jamie Carter, Forbes.com, 24 June 2025 Experts identified the blue/gray ash visible across the site as ejecta from the MOP impacts. Camilla Alcini, ABC News, 23 June 2025 Also look for bright 'ejecta rays' — streaks of reflective debris radiating from old impact sites. Anthony Wood, Space.com, 9 May 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 19 Jul. 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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