Submitted by György Chityil ... on Fri, 01/19/2018 - 22:09 Hierarchy: NounDescription: {{context|cosmology|astronomy}} An occurrence which causes the end of the universe or which destroys the planet earth; a global cataclysm.Ngram: doomsday eventNgram Text: doomsday eventSource: WiktionaryIssue: 0Wiktionary tag: cosmologyastronomyNgram Count: 2