Dictionary
Words, grammatical forms and meanings linked to the ontology.
city killer en · NOUN
Meanings
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(informal) An asteroid that could destroy a whole city on impact with Earth.
This lacuna in space regulation was highlighted earlier this year, when news spread of an asteroid, a potential “city killer” named 2024 YR4, thought to have a small chance of hitting Earth on December 22 2032.
2025 December 20, Laura Battle, “Lunch with the FT: Maggie Aderin-Pocock”, in FT Weekend (Life & Arts section), London: The Financial Times Ltd., →ISSN, →OCLC, page 3:
Forms