Dictionary![]() ![]() sie•mensPronunciation: (sē'munz), [key] —n. (used with a sing. v.) Elect.the SI unit of electrical conductance, equal to the reciprocal of the ohm and replacing the equivalent MKS unit (mho). Abbr.: S Sie•mensPronunciation: (sē'munz; Ger. zē'muns), [key] —n. 1. (Ernst) Wer•ner von Pronunciation: (ernst'- ver'nur- fun), [key] 1816–92, German inventor and electrical engineer. 2. his brother,Sir William (Karl Wilhelm Siemens), 1823–83, English inventor, born in Germany. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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