From The Collaborative International Dictionary of English v.0.48 :
technocracy \tech*noc"ra*cy\, n.
government by technical specialists.
[PJC]
From WordNet (r) 3.0 (2006) :
technocracy
n 1: a form of government in which scientists and technical
experts are in control; "technocracy was described as that
society in which those who govern justify themselves by
appeal to technical experts who justify themselves by
appeal to scientific forms of knowledge"