mass extinction

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mass extinction

noun mass extinctions

  1. countable, uncountable A sharp decrease in the total number of species in a relatively short period of time; specifically, a loss of ∼75% of all species on the planet over a geologically interval of less than 3 million years, as a result of a mass extinction event. Preceded by five other mass extinctions and many more small extinction events, the mass extinction currently underway is, on the one hand, like all the others in that it is nothing other than a significant reduction in the number of individual organisms inhabiting the planet and at the same time a s

    Similar: mass extinction event, extinction event, extinction level event

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noun sharp decrease in the total number of species

Españolextinción masiva
Portuguêsextinção em massa
Françaisextinction massive
DeutschMassenaussterben
Italianoestinzione di massa
Русскийма́ссовое вымира́ние mássovoje vymiránije

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MLA

"mass extinction." Wiktionary, via Micwyn, micwyn.com/word/mass%20extinction. Accessed 6 Nov. 2026.

APA

mass extinction. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/mass%20extinction

Chicago

"mass extinction." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/mass%20extinction.

BibTeX
@misc{mass_extinction_2026,
  title = {mass extinction},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/mass%20extinction},
  urldate = {2026-11-06}
}