cloud chamber

noun
|Updated on: 22 Jun 2018

Definition of cloud chamber

: a vessel containing air saturated with water vapor whose sudden expansion reveals the passage of an ionizing particle by a trail of visible droplets

Recent Examples of cloud chamber from the Web

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

First Known Use of cloud chamber

1897

in the meaning defined above

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having an air of easy unconcern

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