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(noun) Siemens, Ernst Werner von Siemens
German electrical engineer (1816-1892)
(noun) Siemens, Sir Charles William Siemens, Karl Wilhelm Siemens
engineer who was a brother of Ernst Werner von Siemens and who moved to England (1823-1883)
(noun) mho, reciprocal ohm, S
a unit of conductance equal to the reciprocal of an ohm