cos·​mo·​gen·​ic | \ ˌkäz-mə-ˈje-nik How to pronounce cosmogenic (audio) \

Definition of cosmogenic

: produced by the action of cosmic rays cosmogenic carbon 14

Examples of cosmogenic in a Sentence

Recent Examples on the Web

Carbon-14, the isotope that archeologists use in radioactive dating, is cosmogenic—continuously created in Earth’s uppermost atmosphere by cosmic-ray collisions. Adam Davidson, The New Yorker, "Earth’s Mysterious Magnetic Field, Stored in a Jar," 13 Feb. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cosmogenic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of cosmogenic

1962, in the meaning defined above

History and Etymology for cosmogenic

cosmic ray + -o- + -genic

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The first known use of cosmogenic was in 1962

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