Word.ws English Dictionary

mass extinction event

mass extinction event noun: one of five historical events in which the Earth experienced a loss of ∼75% of all species over a geological interval of less than 3 million years, the most recent being the Cretaceous–Paleogene extinction event 66 million years ago.

Noun

mass extinction event (plural mass extinction events)

  1. (evolutionary theory) One of five historical events in which the Earth experienced a loss of ∼75% of all species over a geological interval of less than 3 million years, the most recent being the Cretaceous–Paleogene extinction event 66 million years ago.
    • Joab is a two-mooned habitable planet that is most well known for its mass extinction event. Thousands of years ago, Joab was home to a primate-like spacefaring civilization as well as abundant flora and fauna. However, this can only be deduced from time capsules put into the ground well outside...2010, BioWare, Mass Effect 2 (Science Fiction), Redwood City: Electronic Arts, →OCLC, PC, scene: Joab
    • “As a utopia, it’s a very low bar,” Robinson said. “I mean, if we avoid the mass extinction event, we avoid everything dying, great, that’s utopia, given where we are now.”2022 May 11, Alexandra Alter, quoting Kim Stanley Robinson, “A Sci-Fi Writer Returns to Earth: ‘The Real Story Is the One Facing Us’”, in The New York Times, →ISSN

Forms of mass extinction event

pluralmass extinction events

Questions about mass extinction event

What does mass extinction event mean?
Mass extinction event means one of five historical events in which the Earth experienced a loss of ∼75% of all species over a geological interval of less than 3 million years, the most recent being the Cretaceous–Paleogene extinction event 66 million years ago.
What part of speech is mass extinction event?
Mass extinction event is a noun.
What is the plural of mass extinction event?
The plural of mass extinction event is mass extinction events.

Words near mass extinction event in the dictionary

  1. mass effect
  2. mass effects
  3. mass energies
  4. mass energy
  5. mass extinction
  6. mass extinction event
  7. mass extinction events
  8. mass extinctions
  9. mass favourite
  10. mass finishing
  11. mass finishings

Source and license

Adapted from Wiktionary: mass extinction event (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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