"siemens" in the noun sense
1. mho, siemens, reciprocal ohm, S
a unit of conductance equal to the reciprocal of an ohm
2. Siemens, Karl Wilhelm Siemens, Sir Charles William Siemens
engineer who was a brother of Ernst Werner von Siemens and who moved to England (1823-1883)
3. Siemens, Ernst Werner von Siemens
German electrical engineer (1816-1892)
Source: WordNet® (An amazing lexical database of English)
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