Meanings
plural mass extinction events
- evolutionary theorygeographyOne 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.
“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, →ISSN1 more example
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 habitation centers -- all cities and detectable dwellings were targeted in a massive orbital bombardment that turned them into vapor. The resulting dust shroud killed all photosynthetic life and all fauna dependent on it.
2010, BioWare, Mass Effect 2 (Science Fiction), Redwood City: Electronic Arts, →OCLC, PC, scene: Joab
Synonyms & antonyms
Cite this entry
mass extinction event. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/mass%20extinction%20event
“mass extinction event.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/mass%20extinction%20event. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “mass extinction event,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/mass%20extinction%20event.
Source: mass extinction event on Wiktionary, CC BY-SA 4.0.