Geiger-Müller tube
noun
: a gas-filled counting tube with a cylindrical cathode and axial wire electrode for detecting the presence of cosmic rays or radioactive substances by means of the ionizing particles that penetrate its envelope and set up momentary current pulsations in the gas
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“Geiger-Müller tube.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Geiger-M%C3%BCller%20tube. Accessed 3 Nov. 2025.
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