noun (n)

• a unit of conductance equal to the reciprocal of an ohm(noun.quantity)

  Synonym:
  mho, reciprocal ohm, s
  

  source: wordnet30
• engineer who was a brother of Ernst Werner von Siemens and who moved to England (1823-1883)(noun.person)

  Synonym:
  karl wilhelm siemens, sir charles william siemens
  

  source: wordnet30
• German electrical engineer (1816-1892)(noun.person)

  Synonym:
  ernst werner von siemens
  

  source: wordnet30