Geiger counter

noun
Gei·​ger counter | \ ˈgī-gər- How to pronounce Geiger counter (audio) \

Definition of Geiger counter

: an instrument for detecting the presence and intensity of radiations (such as cosmic rays or particles from a radioactive substance) by means of their ionizing effect on an enclosed gas which results in a pulse that is amplified and fed to a device giving a visible or audible indication

First Known Use of Geiger counter

1924, in the meaning defined above

History and Etymology for Geiger counter

Hans Geiger †1945 German physicist

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Time Traveler for Geiger counter

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The first known use of Geiger counter was in 1924

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Cite this Entry

“Geiger counter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Geiger%20counter. Accessed 14 May. 2021.

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More Definitions for Geiger counter

Geiger counter

noun

English Language Learners Definition of Geiger counter

: an instrument used for finding and measuring radioactivity

Geiger counter

noun
Gei·​ger counter | \ ˈgī-gər- How to pronounce Geiger counter (audio) \

Kids Definition of Geiger counter

: an instrument for detecting the presence of cosmic rays or radioactive substances

Geiger counter

noun
Gei·​ger count·​er | \ ˈgī-gər-ˌkau̇n-tər How to pronounce Geiger counter (audio) \

Medical Definition of Geiger counter

: an instrument for detecting the presence and intensity of radiations (as cosmic rays or particles from a radioactive substance) by means of the ionizing effect on an enclosed gas which results in a pulse that is amplified and fed to a device giving a visible or audible indication

More from Merriam-Webster on Geiger counter

Nglish: Translation of Geiger counter for Spanish Speakers

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