mercury switch
noun Electricity.
an especially quiet switch that opens and closes an electric circuit by shifting a vial containing a pool of mercury so as to cover or uncover the contacts.
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Words nearby mercury switch
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for mercury switch
mercury switch
noun
electrical engineering a switch in which a circuit is completed between two terminals by liquid mercury when the switch is tilted
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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