potassium-argon

adjective
po·​tas·​si·​um-ar·​gon | \ pə-ˈta-sē-əm-ˈär-ˌgän How to pronounce potassium-argon (audio) \

Definition of potassium-argon

: being or relating to a method of dating paleontological or geological materials based on the radioactive decay of potassium to argon that has taken place in a specimen

First Known Use of potassium-argon

1953, in the meaning defined above

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The first known use of potassium-argon was in 1953

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Cite this Entry

“Potassium-argon.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/potassium-argon. Accessed 20 January 2020.

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