Pronunciation: (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
Pronunciation: (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.