Wordnet 3.0
NOUN (1)
1. 
 a substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; 
 its conductivity increases with temperature and in the presence of impurities; 
[syn: semiconductor, semiconducting material]
WordNet (r) 3.0 (2006):
semiconducting material
    n 1: a substance as germanium or silicon whose electrical
         conductivity is intermediate between that of a metal and an
         insulator; its conductivity increases with temperature and
         in the presence of impurities [syn: semiconductor,
         semiconducting material]