mass extinctions

A form of mass extinction — 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.

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Meanings

noun
  1. pluralplural of mass extinction
Cite this entry
APA

mass extinctions. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/mass%20extinctions

MLA

“mass extinctions.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mass%20extinctions. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “mass extinctions,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/mass%20extinctions.

Source: mass extinctions on Wiktionary, CC BY-SA 4.0.